diff --git a/src/builtins/pwd.cpp b/src/builtins/pwd.cpp
index 92add9a2a..7e4de3f8d 100644
--- a/src/builtins/pwd.cpp
+++ b/src/builtins/pwd.cpp
@@ -61,7 +61,7 @@ maybe_t<int> builtin_pwd(parser_t &parser, io_streams_t &streams, const wchar_t
             pwd = std::move(*real_pwd);
         } else {
             const char *error = std::strerror(errno);
-            streams.err.append_format(L"%ls: realpath failed:", cmd, error);
+            streams.err.append_format(L"%ls: realpath failed: %s", cmd, error);
             return STATUS_CMD_ERROR;
         }
     }
diff --git a/src/iothread.cpp b/src/iothread.cpp
index 9c5d10bab..91d1bd024 100644
--- a/src/iothread.cpp
+++ b/src/iothread.cpp
@@ -221,7 +221,7 @@ int thread_pool_t::perform(void_function_t &&func, bool cant_wait) {
 
     // Kick off the thread if we decided to do so.
     if (wakeup_thread) {
-        FLOGF(iothread, L"notifying a thread", this_thread());
+        FLOGF(iothread, L"notifying thread: %p", this_thread());
         pool.queue_cond.notify_one();
     }
     if (spawn_new_thread) {
diff --git a/src/proc.cpp b/src/proc.cpp
index 54c5b7df4..96296caf3 100644
--- a/src/proc.cpp
+++ b/src/proc.cpp
@@ -924,7 +924,7 @@ int terminal_maybe_give_to_job_group(const job_group_t *jg, bool continuing_from
             } else {
                 // Debug the original tcsetpgrp error (not the waitpid errno) to the log, and
                 // then retry until not EPERM or the process group has exited.
-                FLOGF(proc_termowner, L"terminal_give_to_job(): EPERM.\n", pgid);
+                FLOGF(proc_termowner, L"terminal_give_to_job(): EPERM with pgid %d.", pgid);
                 continue;
             }
         } else if (errno == ENOTTY) {