diff --git a/pkgs/by-name/bl/blst/package.nix b/pkgs/by-name/bl/blst/package.nix
index 95b505c47143..a5a4252d57d3 100644
--- a/pkgs/by-name/bl/blst/package.nix
+++ b/pkgs/by-name/bl/blst/package.nix
@@ -53,8 +53,8 @@ stdenv.mkDerivation (finalAttrs: {
     URL: ${finalAttrs.meta.homepage}
     Version: ${finalAttrs.version}
 
-    Cflags: -I \''${includedir}
-    Libs: -L \''${libdir} -lblst
+    Cflags: -I\''${includedir}
+    Libs: -L\''${libdir} -lblst
     Libs.private:
     EOF