diff --git a/mingw-w64-clang/PKGBUILD b/mingw-w64-clang/PKGBUILD
index 407d3274c5..98141c9659 100644
--- a/mingw-w64-clang/PKGBUILD
+++ b/mingw-w64-clang/PKGBUILD
@@ -294,7 +294,7 @@ build() {
     ../llvm-${pkgver}.src
 
   # sed away the bad windows style command line parameters (they are translated by msys from /bad to c:\msys\bad
-  sed -i.orig 's/\/c  \/Fo/-c -Fo/' projects/openmp/runtime/src/CMakeFiles/omp.dir/build.make
+  sed -i.orig 's/\/c \/Fo/-c -Fo/' projects/openmp/runtime/src/CMakeFiles/omp.dir/build.make
   sed -i.orig 's/\/safeseh \/coff/-safeseh -coff/' projects/openmp/runtime/src/CMakeFiles/omp.dir/build.make
 
   ${_make_cmd}