diff --git a/Makefile.in b/Makefile.in
index 6c84b12c0..d4646883a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -242,6 +242,7 @@ $(NCATDIR)/ncat.h: nmap.h
 	mv -f $@.tmp $@
 
 # Update the Nping version number. This is "0.NMAP_VERSION".
+# If the 0. prefix is removed it must also be removed from nmap.spec.in.
 $(NPINGDIR)/nping.h: nmap.h
 	sed -e 's/^#[ \t]*define[ \t]\+NPING_VERSION[ \t]\+\(".*"\)/#define NPING_VERSION "0.$(NMAP_VERSION)"/' $@ > $@.tmp
 	mv -f $@.tmp $@
diff --git a/nmap.spec.in b/nmap.spec.in
index ca68557bf..936b8f36d 100644
--- a/nmap.spec.in
+++ b/nmap.spec.in
@@ -110,6 +110,8 @@ uses.
 # Nping subpackage
 %if "%{buildnping}" != "0"
 %package -n nping
+# If this 0. prefix is removed it must also be removed from Makefile.in.
+Version: 0.%{version}
 Summary: Nping packet generator
 Group: Applications/System