diff --git a/interpreter/llvm/Module.mk b/interpreter/llvm/Module.mk
index d46080d08e2248513c8671d6b4c251f3b95c3f9e..38131f5dbe55fee2270b6ccc2413e62a9c8c7011 100644
--- a/interpreter/llvm/Module.mk
+++ b/interpreter/llvm/Module.mk
@@ -205,7 +205,7 @@ $(LLVMDEPO): $(LLVMDEPS)
 		-DCMAKE_C_COMPILER=$$LLVMCC \
                 -DCMAKE_CXX_COMPILER=$$LLVMCXX \
 		-DCMAKE_CXX_FLAGS="$$LLVM_CFLAGS" \
-		-DCMAKE_CXX_FLAGS="$$LLVM_CFLAGS" \
+		-DCMAKE_C_FLAGS="$$LLVM_CFLAGS" \
 		$(LLVMDIRS) )
 
 all-$(MODNAME): $(LLVMLIB)