diff --git a/fw/common/Makefile.common b/fw/common/Makefile.common
index 4abb04d..f7779f3 100644
--- a/fw/common/Makefile.common
+++ b/fw/common/Makefile.common
@@ -42,7 +42,7 @@ all:		$(MAIN).bin
 # ----- automatic build version information -----------------------------------
 
 
-version version.h:
+version version.c:
 		@if [ -f .version ]; then \
 		    v=`cat .version`; \
 		    expr $$v + 1 >.version; \
@@ -83,7 +83,7 @@ $(MAIN).ihx:	$(OBJS:%=%.rel)
 
 depend .depend:	
 		>.depend
-		touch version.h version.c
+		touch version.c
 		for n in $(OBJS:%=%.c); do \
 		    $(CPP) $(CFLAGS) -DUART_115200_BPS -MM -MG \
 		      `[ -f $$n ] || echo ../common/`$$n >>.depend || \