diff --git a/examples/bin/verify-java b/examples/bin/verify-java
index ee97283..703e472 100755
--- a/examples/bin/verify-java
+++ b/examples/bin/verify-java
@@ -59,7 +59,7 @@
   fail_check()
 }
 my $java_exec = "${java_bin_dir}/java";
-my $java_version = qx[$java_exec -version 2>&1];
+my $java_version = qx["$java_exec" -version 2>&1];
 if ($?) {
   fail_check();
 }