diff --git a/src/main-executable/main.c b/src/main-executable/main.c
index de28320b..0783aea4 100644
--- a/src/main-executable/main.c
+++ b/src/main-executable/main.c
@@ -59,12 +59,14 @@ char *construct_classpath(char *prefix, char **cp_array, size_t len)
 	strcpy(result, prefix);
 	for(int i = 0; i < len; i++) {
 		if(cp_array[i]) {
-			strcat(result, cp_array[i]);
-			if (i < (len - 1))
+			if (i > 0)
 				strcat(result, ":");
+			strcat(result, cp_array[i]);
 		}
 	}
 
+	printf("construct_classpath: returning >%s<\n", result);
+
 	return result;
 }