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-rw-r--r--include/config_fallbacks.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/config_fallbacks.h b/include/config_fallbacks.h
index 07df99664c..6a6350e0a1 100644
--- a/include/config_fallbacks.h
+++ b/include/config_fallbacks.h
@@ -82,7 +82,7 @@
#endif
#ifndef CONFIG_SYS_PBSIZE
-#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + 128)
+#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
#endif
#ifndef CONFIG_FIT_SIGNATURE