diff --git a/deer b/deer
index 6539b9f..3757d74 100644
--- a/deer
+++ b/deer
@@ -261,10 +261,7 @@ deer-get-relative()
 {
     local TMP
     TMP=${1:-${DEER_DIRNAME%/}/$DEER_BASENAME[$DEER_DIRNAME]}
-    TMP="`python -c '
-import sys, os
-print(os.path.relpath(sys.argv[1], sys.argv[2]))
-' $TMP ${DEER_STARTDIR:-$PWD}`"
+    TMP="`realpath --relative-to ${DEER_STARTDIR:-$PWD} $TMP`"
     print -R $TMP:q
 }