diff --git a/src/bin/hey.cpp b/src/bin/hey.cpp
index 2f7c67800a..07962909c5 100644
--- a/src/bin/hey.cpp
+++ b/src/bin/hey.cpp
@@ -1338,7 +1338,7 @@ format_data(int32 type, char *ptr, long size)
 							}
 							for (int32 i = 0; i < 10 && pinfo[pinfo_index].types[i] != 0; i++) {
 								uint32 type = pinfo[pinfo_index].types[i];
-								char str2[4];
+								char str2[6];
 								sprintf(str2, "%c%c%c%c ", int(type & 0xFF000000) >> 24,
 									int(type & 0xFF0000) >> 16, int(type & 0xFF00) >> 8, (int)type & 0xFF);
 								strcat(str, str2);
@@ -1347,7 +1347,7 @@ format_data(int32 type, char *ptr, long size)
 							for (int32 i = 0; i < 3; i++) {
 								for (int32 j = 0; j < 5 && pinfo[pinfo_index].ctypes[i].pairs[j].type != 0; j++) {
 									uint32 type = pinfo[pinfo_index].ctypes[i].pairs[j].type;
-									char str2[4];
+									char str2[strlen(pinfo[pinfo_index].ctypes[i].pairs[j].name) + 8];
 									sprintf(str2, "(%s %c%c%c%c)", pinfo[pinfo_index].ctypes[i].pairs[j].name,
 										int(type & 0xFF000000) >> 24,
 										int(type & 0xFF0000) >> 16,