diff --git a/plugins/aws/aws.plugin.zsh b/plugins/aws/aws.plugin.zsh
index 920a7139d..b8625d7ac 100644
--- a/plugins/aws/aws.plugin.zsh
+++ b/plugins/aws/aws.plugin.zsh
@@ -158,7 +158,7 @@ compctl -K _aws_profiles asp acp aws_change_access_key
 # AWS prompt
 function aws_prompt_info() {
   [[ -n "$AWS_PROFILE" ]] || return
-  echo "${ZSH_THEME_AWS_PREFIX:=<aws:}${AWS_PROFILE:gs/%/%%}${ZSH_THEME_AWS_SUFFIX:=>}"
+  echo "${ZSH_THEME_AWS_PREFIX=<aws:}${AWS_PROFILE:gs/%/%%}${ZSH_THEME_AWS_SUFFIX=>}"
 }
 
 if [[ "$SHOW_AWS_PROMPT" != false && "$RPROMPT" != *'$(aws_prompt_info)'* ]]; then