diff --git a/debian/rules b/debian/rules
index f75688c1..534dddd6 100755
--- a/debian/rules
+++ b/debian/rules
@@ -741,7 +741,7 @@ debian-libclc-build:
 	-DCMAKE_C_COMPILER=$(STAGE_2_BIN_DIR)/clang \
 	-DCMAKE_CXX_COMPILER=$(STAGE_2_BIN_DIR)/clang++ \
 	-DCMAKE_C_FLAGS="$(opt_flags) $(STAGE_2_CFLAGS)" \
-	-DCMAKE_CXX_FLAGS="$(opt_flags) $(STAGE_2_CXXFLAGS)" \
+	-DCMAKE_CXX_FLAGS="$(opt_flags) $(STAGE_2_CXXFLAGS) -I$(BASE_PATH)/llvm/include" \
 	-DCMAKE_SHARED_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
 	-DCMAKE_MODULE_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \
 	-DCMAKE_EXE_LINKER_FLAGS="$(STAGE_2_LDFLAGS) -L$(STAGE_2_LIB_DIR)" \