diff --git a/picoc.c b/picoc.c
index 9afaedc..a671726 100644
--- a/picoc.c
+++ b/picoc.c
@@ -13,7 +13,7 @@
 
 /* Override via STACKSIZE environment variable */
 /* stack space */
-#define PICOC_STACK_SIZE (512000)
+#define PICOC_STACK_SIZE (128000*4)
 
 int main(int argc, char **argv)
 {