diff --git a/src/common/env.c b/src/common/env.c
index c2fe857b2122ebce4049d2a9a7deb194c98d0ba6..2f0e4e52004307b1e16bb34e94e134678a6b042e 100644
--- a/src/common/env.c
+++ b/src/common/env.c
@@ -1056,7 +1056,6 @@ int env_array_overwrite_fmt(char ***array_ptr, const char *name,
 	char *str = NULL;
 	va_list ap;
 
-	buf[0] = '\0';
 	if (array_ptr == NULL)
 		return 0;