diff --git a/build.sh b/build.sh
index bfb04a8..e10820b 100755
--- a/build.sh
+++ b/build.sh
@@ -46,8 +46,8 @@ if 	 [ -x "$(command -v ldc2)" ]; then d_compiler="ldc2";
 elif [ -x "$(command -v dmd)"  ]; then d_compiler="dmd";
 else echo "Unable to find D compiler"; exit -1; fi;
 
-$codegen_src="${script_dir}/vulkan_codegen.d"
-$codegen_out="${build}/vulkan_codegen"
+codegen_src="${script_dir}/vulkan_codegen.d"
+codegen_out="${build}/vulkan_codegen"
 
 $d_compiler $codegen_src $out $codegen_out