diff --git a/configure/os/CONFIG.Common.vxWorksCommon b/configure/os/CONFIG.Common.vxWorksCommon
index 8b950cf6c..7fe56b874 100644
--- a/configure/os/CONFIG.Common.vxWorksCommon
+++ b/configure/os/CONFIG.Common.vxWorksCommon
@@ -101,6 +101,7 @@ VX_DIR = $(VX_DIR_$(VXWORKS_MAJOR_VERSION))
 VX_INCLUDE_DIRS_5 = $(VX_DIR)/target/h
 VX_INCLUDE_DIRS_6 = $(VX_DIR)/target/h $(VX_DIR)/target/h/wrn/coreip
 GNU_TARGET_INCLUDE_DIR = $(VX_INCLUDE_DIRS_$(VXWORKS_MAJOR_VERSION))
+TARGET_CPPFLAGS = -isystem $(VX_DIR)/target/h
 
 #--------------------------------------------------
 # vxWorks GNU directories