diff --git a/xwords4/android/scripts/gen_gcmid.sh b/xwords4/android/scripts/gen_gcmid.sh
index 35e289b48..6d488f945 100755
--- a/xwords4/android/scripts/gen_gcmid.sh
+++ b/xwords4/android/scripts/gen_gcmid.sh
@@ -3,19 +3,26 @@
 set -e -u
 
 GCM_SENDER_ID=${GCM_SENDER_ID:-""}
+CRITTERCISM_APP_ID=${CRITTERCISM_APP_ID:-""}
 
 if [ -z "$GCM_SENDER_ID" ]; then
     echo "GCM_SENDER_ID empty; GCM use will be disabled" >&2
 fi
+if [ -z "$CRITTERCISM_APP_ID" ]; then
+    echo "CRITTERCISM_APP_ID empty; Crittercism will not be enabled" >&2
+fi
 
 PKG=$1
 
 cat <<EOF
 // Auto-generated: DO NOT CHECK THIS IN until questions about
-// obscuring the id are cleared up
+// obscuring various ids are cleared up. For now they're not meant 
+// to be committed to public repos.
+
 package org.eehouse.android.$PKG;
 
 public class GCMConsts {
     public static final String SENDER_ID = "${GCM_SENDER_ID}";
+    public static final String CRITTERCISM_APP_ID  = "${CRITTERCISM_APP_ID}";
 }
 EOF