diff --git a/src/xspice/icm/Makefile b/src/xspice/icm/Makefile
index 2879c12bf..a849cb6c2 100644
--- a/src/xspice/icm/Makefile
+++ b/src/xspice/icm/Makefile
@@ -1,4 +1,4 @@
-# The master makefile to make spiceopuse (TM) like codemodels
+# The master makefile to make spiceopus (TM) like codemodels
 # Under the GPLV2 or later license 
 # 2003 - Stefan Jones <stefan.jones@multigig.com>
 
@@ -106,8 +106,8 @@ uobjs-clean:
 	-rm -rf .deps
 
 %.o: %.c
-	@echo '$(COMPILE) -c $<'; \
-	$(COMPILE) -Wp,-MD,.deps/$(*F).pp -c $<
+	@echo '$(COMPILE) $(DEPFLAGS) .deps/$(*F).pp -c $<'; \
+	$(COMPILE) $(DEPFLAGS) .deps/$(*F).pp -c $<
 	@-cp .deps/$(*F).pp .deps/$(*F).P; \
 	tr ' ' '\012' < .deps/$(*F).pp \
 	| sed -e 's/^\\$$//' -e '/^$$/ d' -e '/:$$/ d' -e 's/$$/ :/' \
diff --git a/src/xspice/icm/makedefs.in b/src/xspice/icm/makedefs.in
index e1b0fa914..5dad7b0fc 100644
--- a/src/xspice/icm/makedefs.in
+++ b/src/xspice/icm/makedefs.in
@@ -18,6 +18,7 @@ INCLUDES = -I$(TOPDIR)$(top_srcdir)/src/include -I$(TOPDIR)$(top_builddir)
 
 # CFLAGS to use here
 CFLAGS = @CFLAGS@ -fPIC -DCM_LINUX
+DEPFLAGS = -MD -MF
 ISMINGW = $(shell uname | grep -c "MINGW32")
 ifeq ($(ISMINGW), 1)
   CFLAGS = @CFLAGS@ -DCM_WINDOWS
@@ -26,10 +27,11 @@ ISCYGWIN = $(shell uname | grep -c "CYGWIN")
 ifeq ($(ISCYGWIN), 1)
   CFLAGS = @CFLAGS@ -DCM_WINDOWS
 endif
-ISSUNCC = $(shell uname | grep -c "SunOS")
-ifeq ($(ISSUNCC), 1)
+ISSUNOS = $(shell uname | grep -c "SunOS")
+ifeq ($(ISSUNOS), 1)
   ifneq "$(CC)" "gcc"
     CFLAGS = @CFLAGS@ -KPIC -DCM_LINUX
+    DEPFLAGS = -xMD -xMF
   endif
 endif