diff --git a/src/tool_main.c b/src/tool_main.c
index 9f16a4e278..b40c8e9a80 100644
--- a/src/tool_main.c
+++ b/src/tool_main.c
@@ -214,7 +214,7 @@ static void main_free(struct GlobalConfig *config)
   convert_cleanup();
 #ifdef USE_NSS
   if(PR_Initialized()) {
-    /* prevent valgrind from reporting still reachable mem from NSRP arenas */
+    /* prevent valgrind from reporting still reachable mem from NSPR arenas */
     PL_ArenaFinish();
     /* prevent valgrind from reporting possibly lost memory (fd cache, ...) */
     PR_Cleanup();