diff --git a/pkgs/build-support/setup-hooks/make-wrapper.sh b/pkgs/build-support/setup-hooks/make-wrapper.sh
index 7d0f88abb855..d3db0b64bd53 100644
--- a/pkgs/build-support/setup-hooks/make-wrapper.sh
+++ b/pkgs/build-support/setup-hooks/make-wrapper.sh
@@ -16,7 +16,7 @@ makeWrapper() {
             varName=${params[$((n + 1))]}
             value=${params[$((n + 2))]}
             n=$((n + 2))
-            echo "export $varName=$value" >> $wrapper
+            echo "export $varName='$value'" >> $wrapper
         fi
 
         if test "$p" = "--unset"; then