diff --git a/cmake/modules/verify-toolchain.cmake b/cmake/modules/verify-toolchain.cmake
index 702e44b..b59eb7e 100644
--- a/cmake/modules/verify-toolchain.cmake
+++ b/cmake/modules/verify-toolchain.cmake
@@ -76,7 +76,7 @@
     # To support Zephyr SDK tools (DTC, and other tools) with 3rd party toolchains
     # then we keep track of current toolchain variant.
     set(ZEPHYR_CURRENT_TOOLCHAIN_VARIANT ${ZEPHYR_TOOLCHAIN_VARIANT})
-    find_package(Zephyr-sdk ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION} REQUIRED QUIET HINTS $ENV{ZEPHYR_SDK_INSTALL_DIR})
+    find_package(Zephyr-sdk ${TOOLCHAIN_ZEPHYR_MINIMUM_REQUIRED_VERSION} REQUIRED QUIET HINTS ${ZEPHYR_SDK_INSTALL_DIR})
     if(DEFINED ZEPHYR_CURRENT_TOOLCHAIN_VARIANT)
       set(ZEPHYR_TOOLCHAIN_VARIANT ${ZEPHYR_CURRENT_TOOLCHAIN_VARIANT})
     endif()