diff --git a/lib/print.c b/lib/print.c
index 6f0c93a..d9107f1 100644
--- a/lib/print.c
+++ b/lib/print.c
@@ -289,7 +289,7 @@ static size_t vsnprintf(char** str, size_t* size, const char *format, va_list va
 	}
 end:
 	if (NULL!=str && NULL!=*str && NULL!=size) { // when working on a string
-		*str='\0'; // enforce null termination
+		**str='\0'; // enforce null termination
 	}
 	return length; // return number of characters it should have written
 }