diff --git a/tool/store-helper/check-is-installed b/tool/store-helper/check-is-installed
index 4ce5f0f..febb4ce 100755
--- a/tool/store-helper/check-is-installed
+++ b/tool/store-helper/check-is-installed
@@ -1,2 +1,2 @@
 #!/bin/bash
-dpkg -l | grep "^ii" | grep -w "$1" > /dev/null
+dpkg -l | grep "^ii  $1 " > /dev/null