diff --git a/pkgs/by-name/gh/ghostscript/package.nix b/pkgs/by-name/gh/ghostscript/package.nix
index 3ebd9e61ab79..fe7912226952 100644
--- a/pkgs/by-name/gh/ghostscript/package.nix
+++ b/pkgs/by-name/gh/ghostscript/package.nix
@@ -165,10 +165,10 @@ stdenv.mkDerivation (finalAttrs: {
   '';
 
   configureFlags = [
+    "CFLAGS=-std=gnu17"
     "--with-system-libtiff"
     "--without-tesseract"
   ]
-  ++ lib.optional stdenv.cc.isClang "CFLAGS=-std=gnu17" # FIXME: make it unconditional
   ++ lib.optionals dynamicDrivers [
     "--enable-dynamic"
     "--disable-hidden-visibility"