diff --git a/shell/main.c b/shell/main.c
index 7bf193d..9cb6fba 100755
--- a/shell/main.c
+++ b/shell/main.c
@@ -213,7 +213,7 @@ static void _tidy_mem_pool(bool_t force) {
 		return;
 
 	for(i = 0; i < pool_count; i++) {
-		while((s = pool[i].stack)) {
+		while(s = pool[i].stack) {
 			pool[i].stack = (char*)_POOL_NODE_NEXT(s);
 			_POOL_NODE_FREE(s);
 		}
@@ -292,7 +292,7 @@ static void _close_mem_pool(void) {
 		return;
 
 	for(i = 0; i < pool_count; i++) {
-		while((s = pool[i].stack)) {
+		while(s = pool[i].stack) {
 			pool[i].stack = (char*)_POOL_NODE_NEXT(s);
 			_POOL_NODE_FREE(s);
 		}