diff --git a/core/drivers/crypto/se050/crypto.mk b/core/drivers/crypto/se050/crypto.mk
index 473cd82aab6..8c4adf06965 100644
--- a/core/drivers/crypto/se050/crypto.mk
+++ b/core/drivers/crypto/se050/crypto.mk
@@ -29,7 +29,7 @@ CFG_CORE_SE05X_INIT_NVM ?= n
 # confirmation from the SE that the NVM object has been removed.
 CFG_CORE_SE05X_BLOCK_OBJ_DEL_ON_ERROR ?= n
 # Select the SE05X applet version for aligning the built-in features
-+CFG_CORE_SE05X_VER ?= 03_XX
+CFG_CORE_SE05X_VER ?= 03_XX
 
 # I2C bus baudrate (depends on SoC)
 CFG_CORE_SE05X_BAUDRATE ?= 3400000