diff --git a/main.c b/main.c
index e47afac..bac6fdf 100644
--- a/main.c
+++ b/main.c
@@ -11,7 +11,7 @@ long GetFileSize(FILE* f){
 
 void DumpMemory(char *memory, char *filename){
     FILE *dump = fopen(filename, "wb");
-    fwrite(memory, 1, mem_size, dump);
+    fwrite(memory, 1, strlen(memory), dump);
     fclose(dump);
 }