diff --git a/src/wren_utils.h b/src/wren_utils.h
index 977d6c20..dc25e678 100644
--- a/src/wren_utils.h
+++ b/src/wren_utils.h
@@ -9,7 +9,7 @@
 // A simple structure to keep trace of the string length as long as its data
 // (including the null-terminator)
 typedef struct {
-  char *buffer;
+  char* buffer;
   int length;
 } String;