diff --git a/themes/powerline-multiline/powerline-multiline.theme.bash b/themes/powerline-multiline/powerline-multiline.theme.bash
index edd7b82d..6915aaf2 100644
--- a/themes/powerline-multiline/powerline-multiline.theme.bash
+++ b/themes/powerline-multiline/powerline-multiline.theme.bash
@@ -236,13 +236,9 @@ function __powerline_prompt_command {
   PS1="${LEFT_PROMPT}${RIGHT_PROMPT}\n${LAST_STATUS_PROMPT}${PROMPT_CHAR} "
 
   ## cleanup ##
-  unset LAST_STATUS_PROMPT
-  unset LEFT_PROMPT
-  unset RIGHT_PROMPT
-  unset RIGHT_PROMPT_LENGTH
-  unset SEGMENTS_AT_LEFT
-  unset SEGMENTS_AT_RIGHT
-  unset LAST_SEGMENT_COLOR
+  unset LAST_STATUS_PROMPT LAST_SEGMENT_COLOR \
+        LEFT_PROMPT RIGHT_PROMPT RIGHT_PROMPT_LENGTH \
+        SEGMENTS_AT_LEFT SEGMENTS_AT_RIGHT
 }
 
 PROMPT_COMMAND=__powerline_prompt_command