diff --git a/amazonclouddrive/amazonclouddrive.go b/amazonclouddrive/amazonclouddrive.go
index 750f6d138..8f48d9348 100644
--- a/amazonclouddrive/amazonclouddrive.go
+++ b/amazonclouddrive/amazonclouddrive.go
@@ -639,12 +639,12 @@ func (o *Object) readMetaData() (err error) {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	modTime, err := time.Parse(timeFormat, *o.info.ModifiedDate)
 	if err != nil {
-		fs.Log(o, "Failed to read mtime from object: %s", err)
+		fs.Log(o, "Failed to read mtime from object: %v", err)
 		return time.Now()
 	}
 	return modTime
diff --git a/drive/drive.go b/drive/drive.go
index 2016e2f54..fb285fc94 100644
--- a/drive/drive.go
+++ b/drive/drive.go
@@ -884,12 +884,12 @@ func (o *Object) readMetaData() (err error) {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	modTime, err := time.Parse(timeFormatIn, o.modifiedDate)
 	if err != nil {
-		fs.Log(o, "Failed to read mtime from object: %s", err)
+		fs.Log(o, "Failed to read mtime from object: %v", err)
 		return time.Now()
 	}
 	return modTime
diff --git a/dropbox/dropbox.go b/dropbox/dropbox.go
index 71eb4fcbf..3f5a3b152 100644
--- a/dropbox/dropbox.go
+++ b/dropbox/dropbox.go
@@ -679,7 +679,7 @@ func (o *Object) readMetaData() (err error) {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	return o.modTime
diff --git a/fs/operations.go b/fs/operations.go
index bd6b04c84..4221042d1 100644
--- a/fs/operations.go
+++ b/fs/operations.go
@@ -72,7 +72,7 @@ func CheckHashes(src, dst Object) (equal bool, hash HashType, err error) {
 	srcHash, err := src.Hash(hash)
 	if err != nil {
 		Stats.Error()
-		ErrorLog(src, "Failed to calculate src hash: %s", err)
+		ErrorLog(src, "Failed to calculate src hash: %v", err)
 		return false, hash, err
 	}
 	if srcHash == "" {
@@ -81,7 +81,7 @@ func CheckHashes(src, dst Object) (equal bool, hash HashType, err error) {
 	dstHash, err := dst.Hash(hash)
 	if err != nil {
 		Stats.Error()
-		ErrorLog(dst, "Failed to calculate dst hash: %s", err)
+		ErrorLog(dst, "Failed to calculate dst hash: %v", err)
 		return false, hash, err
 	}
 	if dstHash == "" {
@@ -156,7 +156,7 @@ func Equal(src, dst Object) bool {
 			return false
 		} else if err != nil {
 			Stats.Error()
-			ErrorLog(dst, "Failed to read set modification time: %s", err)
+			ErrorLog(dst, "Failed to read set modification time: %v", err)
 		}
 	}
 
@@ -222,7 +222,7 @@ tryAgain:
 		in0, err = src.Open()
 		if err != nil {
 			Stats.Error()
-			ErrorLog(src, "Failed to open: %s", err)
+			ErrorLog(src, "Failed to open: %v", err)
 			return
 		}
 
@@ -258,7 +258,7 @@ tryAgain:
 	}
 	if err != nil {
 		Stats.Error()
-		ErrorLog(src, "Failed to copy: %s", err)
+		ErrorLog(src, "Failed to copy: %v", err)
 		removeFailedCopy(dst)
 		return
 	}
@@ -267,7 +267,7 @@ tryAgain:
 	if !Config.IgnoreSize && src.Size() != dst.Size() {
 		Stats.Error()
 		err = errors.Errorf("corrupted on transfer: sizes differ %d vs %d", src.Size(), dst.Size())
-		ErrorLog(dst, "%s", err)
+		ErrorLog(dst, "%v", err)
 		removeFailedCopy(dst)
 		return
 	}
@@ -284,16 +284,16 @@ tryAgain:
 		srcSum, err := src.Hash(hashType)
 		if err != nil {
 			Stats.Error()
-			ErrorLog(src, "Failed to read src hash: %s", err)
+			ErrorLog(src, "Failed to read src hash: %v", err)
 		} else if srcSum != "" {
 			dstSum, err := dst.Hash(hashType)
 			if err != nil {
 				Stats.Error()
-				ErrorLog(dst, "Failed to read hash: %s", err)
+				ErrorLog(dst, "Failed to read hash: %v", err)
 			} else if !HashEquals(srcSum, dstSum) {
 				Stats.Error()
 				err = errors.Errorf("corrupted on transfer: %v hash differ %q vs %q", hashType, srcSum, dstSum)
-				ErrorLog(dst, "%s", err)
+				ErrorLog(dst, "%v", err)
 				removeFailedCopy(dst)
 				return
 			}
@@ -435,7 +435,7 @@ func DeleteFile(dst Object) {
 		Stats.DoneChecking(dst)
 		if err != nil {
 			Stats.Error()
-			ErrorLog(dst, "Couldn't delete: %s", err)
+			ErrorLog(dst, "Couldn't delete: %v", err)
 		} else {
 			Debug(dst, "Deleted")
 		}
diff --git a/googlecloudstorage/googlecloudstorage.go b/googlecloudstorage/googlecloudstorage.go
index 596bbc9a1..89a476012 100644
--- a/googlecloudstorage/googlecloudstorage.go
+++ b/googlecloudstorage/googlecloudstorage.go
@@ -612,7 +612,7 @@ func (o *Object) readMetaData() (err error) {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		// fs.Log(o, "Failed to read metadata: %s", err)
+		// fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	return o.modTime
diff --git a/onedrive/onedrive.go b/onedrive/onedrive.go
index 28c88ff1c..a0ea16aa3 100644
--- a/onedrive/onedrive.go
+++ b/onedrive/onedrive.go
@@ -663,7 +663,7 @@ func (o *Object) Hash(t fs.HashType) (string, error) {
 func (o *Object) Size() int64 {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return 0
 	}
 	return o.size
@@ -720,7 +720,7 @@ func (o *Object) readMetaData() (err error) {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	return o.modTime
diff --git a/s3/s3.go b/s3/s3.go
index 3d5eaab11..58eaef6c5 100644
--- a/s3/s3.go
+++ b/s3/s3.go
@@ -699,7 +699,7 @@ func (o *Object) readMetaData() (err error) {
 	o.bytes = size
 	o.meta = resp.Metadata
 	if resp.LastModified == nil {
-		fs.Log(o, "Failed to read last modified from HEAD: %s", err)
+		fs.Log(o, "Failed to read last modified from HEAD: %v", err)
 		o.lastModified = time.Now()
 	} else {
 		o.lastModified = *resp.LastModified
@@ -714,7 +714,7 @@ func (o *Object) readMetaData() (err error) {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	// read mtime out of metadata if available
@@ -725,7 +725,7 @@ func (o *Object) ModTime() time.Time {
 	}
 	modTime, err := swift.FloatStringToTime(*d)
 	if err != nil {
-		fs.Log(o, "Failed to read mtime from object: %s", err)
+		fs.Log(o, "Failed to read mtime from object: %v", err)
 		return o.lastModified
 	}
 	return modTime
diff --git a/swift/swift.go b/swift/swift.go
index 09f845d47..c924fecdc 100644
--- a/swift/swift.go
+++ b/swift/swift.go
@@ -580,7 +580,7 @@ func (o *Object) ModTime() time.Time {
 	}
 	modTime, err := o.headers.ObjectMetadata().GetModTime()
 	if err != nil {
-		// fs.Log(o, "Failed to read mtime from object: %s", err)
+		// fs.Log(o, "Failed to read mtime from object: %v", err)
 		return o.info.LastModified
 	}
 	return modTime
diff --git a/yandex/yandex.go b/yandex/yandex.go
index ec38240d3..454d66b71 100644
--- a/yandex/yandex.go
+++ b/yandex/yandex.go
@@ -477,7 +477,7 @@ func (o *Object) Size() int64 {
 func (o *Object) ModTime() time.Time {
 	err := o.readMetaData()
 	if err != nil {
-		fs.Log(o, "Failed to read metadata: %s", err)
+		fs.Log(o, "Failed to read metadata: %v", err)
 		return time.Now()
 	}
 	return o.modTime