diff --git a/src/ca/Makefile.Unix b/src/ca/Makefile.Unix
index 4a2ac5463..96f8e26da 100644
--- a/src/ca/Makefile.Unix
+++ b/src/ca/Makefile.Unix
@@ -1,6 +1,8 @@
 TOP = ../../..
 include $(TOP)/config/CONFIG_BASE
 
+CMPLR = STRICT
+
 USR_LDLIBS = -lca -lCom 
 USR_LDFLAGS = -L.