diff --git a/configs/bf533-stamp_defconfig b/configs/bf533-stamp_defconfig
index 154dc26..4956078 100644
--- a/configs/bf533-stamp_defconfig
+++ b/configs/bf533-stamp_defconfig
@@ -2,4 +2,5 @@ CONFIG_BLACKFIN=y
 CONFIG_TARGET_BF533_STAMP=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED=y
+# CONFIG_REGEX is not set
 CONFIG_LIB_RAND=y
diff --git a/configs/bf538f-ezkit_defconfig b/configs/bf538f-ezkit_defconfig
index 6cb6c6b..668f9cb 100644
--- a/configs/bf538f-ezkit_defconfig
+++ b/configs/bf538f-ezkit_defconfig
@@ -2,4 +2,5 @@ CONFIG_BLACKFIN=y
 CONFIG_TARGET_BF538F_EZKIT=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED=y
+# CONFIG_REGEX is not set
 CONFIG_LIB_RAND=y
diff --git a/configs/cm-bf548_defconfig b/configs/cm-bf548_defconfig
index 949612d..49d59dd 100644
--- a/configs/cm-bf548_defconfig
+++ b/configs/cm-bf548_defconfig
@@ -2,4 +2,5 @@ CONFIG_BLACKFIN=y
 CONFIG_TARGET_CM_BF548=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED=y
+# CONFIG_REGEX is not set
 CONFIG_LIB_RAND=y