diff --git a/xwords4/android/scripts/install_all.sh b/xwords4/android/scripts/install_all.sh
index e095f4c09..50f6993f8 100755
--- a/xwords4/android/scripts/install_all.sh
+++ b/xwords4/android/scripts/install_all.sh
@@ -17,7 +17,7 @@ DEVICES=""
 while [ $# -ge 1 ]; do
     case $1 in
         -e)
-            DEVICES="$DEVICES $(adb devices | adb devices | grep '^emulator' | awk '{print $1}')"
+            DEVICES="$DEVICES $(adb devices | grep '^emulator' | awk '{print $1}')"
             ;;
         -d)
             DEVICES="$DEVICES $(adb devices | grep -v emulator | grep 'device$' | awk '{print $1}')"