diff --git a/config/libc/newlib.in b/config/libc/newlib.in
index 8541e3e3..19cf6c44 100644
--- a/config/libc/newlib.in
+++ b/config/libc/newlib.in
@@ -67,7 +67,7 @@ config LIBC_VERSION
     string
 # Don't remove next line
 # CT_INSERT_VERSION_STRING_BELOW
-    default "2.1.0" if LIBC_NEWLIB_V_2_0_0
+    default "2.1.0" if LIBC_NEWLIB_V_2_1_0
     default "2.0.0" if LIBC_NEWLIB_V_2_0_0
     default "1.20.0" if LIBC_NEWLIB_V_1_20_0
     default "1.19.0" if LIBC_NEWLIB_V_1_19_0