Index: kernel/generic/src/printf/printf_core.c
===================================================================
--- kernel/generic/src/printf/printf_core.c	(revision e3a050c74793b687089214cd75095d5284c825b8)
+++ kernel/generic/src/printf/printf_core.c	(revision 013d0d7e996d89057dcb3358db7474b5837d171f)
@@ -284,5 +284,5 @@
 	/* Print leading spaces. */
 	size_t strw = str_length(str);
-	if (precision == 0)
+	if ((precision == 0) || (precision > strw))
 		precision = strw;
 	
@@ -332,5 +332,5 @@
 	/* Print leading spaces. */
 	size_t strw = wstr_length(str);
-	if (precision == 0)
+	if ((precision == 0) || (precision > strw))
 		precision = strw;