diff --git a/pkgs/tools/compression/gzip/builder.sh b/pkgs/tools/compression/gzip/builder.sh
index ea9ff646de8..9cf502b4330 100644
--- a/pkgs/tools/compression/gzip/builder.sh
+++ b/pkgs/tools/compression/gzip/builder.sh
@@ -1,4 +1,4 @@
-source $stdenv/setup.sh
+source $stdenv/setup
 
 postInstall=postInstall
 postInstall() {
@@ -6,4 +6,4 @@ postInstall() {
     ln -sf gzip $out/bin/zcat
 }
 
-genericBuilder
\ No newline at end of file
+genericBuild