diff --git a/pkgs/development/interpreters/perl/builder.sh b/pkgs/development/interpreters/perl/builder.sh
index e39ae47e573a..172d683cf53c 100644
--- a/pkgs/development/interpreters/perl/builder.sh
+++ b/pkgs/development/interpreters/perl/builder.sh
@@ -1,7 +1,7 @@
 source $stdenv/setup
 
 if test "$NIX_ENFORCE_PURITY" = "1" -a -n "$NIX_STORE"; then
-    GLIBC=$(cat $NIX_GCC/nix-support/orig-glibc)
+    GLIBC=$(cat $NIX_GCC/nix-support/orig-libc)
     extraflags="-Dlocincpth=$GLIBC/include -Dloclibpth=$GLIBC/lib"
 fi
 
@@ -15,4 +15,4 @@ postInstall() {
 }
 postInstall=postInstall
 
-genericBuild
\ No newline at end of file
+genericBuild