diff --git a/desmume/src/emufile.h b/desmume/src/emufile.h
index 612feccad..d14a9ba9c 100644
--- a/desmume/src/emufile.h
+++ b/desmume/src/emufile.h
@@ -134,14 +134,19 @@ public:
 	virtual int fprintf(const char *format, ...) {
 		va_list argptr;
 		va_start(argptr, format);
-		
+
 		//we dont generate straight into the buffer because it will null terminate (one more byte than we want)
 		int amt = vsnprintf(0,0,format,argptr);
 		char* tempbuf = new char[amt+1];
-		vsprintf(tempbuf,format,argptr);
-		fwrite(tempbuf,amt);
-		delete[] tempbuf;
+
 		va_end(argptr);
+		va_start(argptr, format);
+		vsprintf(tempbuf,format,argptr);
+		
+        fwrite(tempbuf,amt);
+		delete[] tempbuf;
+		
+        va_end(argptr);
 		return amt;
 	};