diff --git a/.bashrc b/.bashrc
index cc973a7..92458b5 100644
--- a/.bashrc
+++ b/.bashrc
@@ -37,7 +37,9 @@ export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND$'\n'}history -a; histor
 #--------------------------------------------------------------------------------
 # Make OS X's 'top' behave like the GNU one
 #--------------------------------------------------------------------------------
-alias top='top -u'
+if [ $(uname -s) = "Darwin" ]; then
+    alias top='top -u'
+fi
 #--------------------------------------------------------------------------------
 
 #--------------------------------------------------------------------------------