diff --git a/scripts/common/_rid.sh b/scripts/common/_rid.sh
index 273085f55..fc331a82b 100644
--- a/scripts/common/_rid.sh
+++ b/scripts/common/_rid.sh
@@ -9,9 +9,9 @@ export UNAME=$(uname)
 if [ -z "$RID" ]; then
     if [ "$UNAME" == "Darwin" ]; then
         export OSNAME=osx
-        if [ -n "$(sw_vers -productVersion | grep 10.10.)" ]; then
+        if [ -n "$(sw_vers -productVersion | grep 10.10)" ]; then
             export RID=osx.10.10-x64
-        elif [ -n "$(sw_vers -productVersion | grep 10.11.)" ]; then
+        elif [ -n "$(sw_vers -productVersion | grep 10.11)" ]; then
             export RID=osx.10.10-x64
         else
             error "unknown OS X: $(sw_vers -productVersion)" 1>&2