diff --git a/mini-printf.c b/mini-printf.c
index ec0ff14..61b04f1 100644
--- a/mini-printf.c
+++ b/mini-printf.c
@@ -127,18 +127,20 @@ static int
 _puts(char *s, int len, void *buf)
 {
 	if(!buf) return len;
-	struct mini_buff *b = buf;
-	char * p0 = b->buffer;
-	int i;
-	/* Copy to buffer */
-	for (i = 0; i < len; i++) {
-		if(b->pbuffer == b->buffer + b->buffer_len - 1) {
-			break;
+	else {
+		struct mini_buff *b = buf;
+		char * p0 = b->buffer;
+		int i;
+		/* Copy to buffer */
+		for (i = 0; i < len; i++) {
+			if(b->pbuffer == b->buffer + b->buffer_len - 1) {
+				break;
+			}
+			*(b->pbuffer ++) = s[i];
 		}
-		*(b->pbuffer ++) = s[i];
+		*(b->pbuffer) = 0;
+		return b->pbuffer - p0;
 	}
-	*(b->pbuffer) = 0;
-	return b->pbuffer - p0;
 }
 
 #ifdef MINI_PRINTF_ENABLE_OBJECTS
@@ -161,11 +163,12 @@ int
 mini_vsnprintf(char *buffer, unsigned int buffer_len, const char *fmt, va_list va)
 {
 	struct mini_buff b;
+	int n;
 	b.buffer = buffer;
 	b.pbuffer = buffer;
 	b.buffer_len = buffer_len;
 	if(buffer_len == 0) buffer = (void*) 0;
-	int n = mini_vpprintf(_puts, (buffer != (void*)0)?&b:(void*)0, fmt, va);
+	n = mini_vpprintf(_puts, (buffer != (void*)0)?&b:(void*)0, fmt, va);
 	if(buffer == (void*) 0) {
 		return n;
 	}
@@ -178,6 +181,7 @@ mini_vpprintf(int (*puts)(char* s, int len, void* buf), void* buf, const char *f
 	char bf[24];
 	char bf2[24];
 	char ch;
+	int n;
 #ifdef MINI_PRINTF_ENABLE_OBJECTS
 	void* obj;
 #endif
@@ -185,7 +189,7 @@ mini_vpprintf(int (*puts)(char* s, int len, void* buf), void* buf, const char *f
 		/* run puts in counting mode. */
 		puts = _puts; buf = (void*)0;
 	}
-	int n = 0;
+	n = 0;
 	while ((ch=*(fmt++))) {
 		int len;
 		if (ch!='%') {