diff --git a/configs/bf533-stamp_defconfig b/configs/bf533-stamp_defconfig
index 154dc26909f4d336655ea5b0d21d27abbcde57b4..4956078e615fb8e95c2608d808b189b5136e20bd 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 6cb6c6bf31b41a46c132ee772e2eec1ee0a1fe36..668f9cb85d08f827c700187ededbffacda6ca8f0 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 949612d0539891cae1a48e3a45073d89e9285752..49d59dd07dc5a4393b42641ca78842054f9add26 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