diff --git a/configure/os/CONFIG.Common.vxWorks-ppc604 b/configure/os/CONFIG.Common.vxWorks-ppc604
index 3cc790781..34945d0f8 100644
--- a/configure/os/CONFIG.Common.vxWorks-ppc604
+++ b/configure/os/CONFIG.Common.vxWorks-ppc604
@@ -17,5 +17,5 @@ ARCH_CLASS = ppc
 
 # Architecture specific build flags
 ARCH_DEP_CPPFLAGS = -DCPU=PPC604 
-ARCH_DEP_CFLAGS = -mcpu=604
+ARCH_DEP_CFLAGS = -mcpu=604 -mstrict-align