diff --git a/src-java/babashka/impl/Graal.java b/src-java/babashka/impl/Graal.java
index 51201880..7fa413ff 100644
--- a/src-java/babashka/impl/Graal.java
+++ b/src-java/babashka/impl/Graal.java
@@ -27,7 +27,7 @@ public class Graal {
 
     // API
     public static void setEnv(String name, String value) {
-        System.out.println("setenv", name, value);
+        System.out.println("setenv" + " " + name + " " value);
         try (CCharPointerHolder nameHolder = CTypeConversion.toCString(name);
              CCharPointerHolder valueHolder = CTypeConversion.toCString(value)) {
             setenv(nameHolder.get(), valueHolder.get(), 1);