diff --git a/cmake/modules/FindmbedTLS.cmake b/cmake/modules/FindmbedTLS.cmake
index 461464486..4f9c73e46 100644
--- a/cmake/modules/FindmbedTLS.cmake
+++ b/cmake/modules/FindmbedTLS.cmake
@@ -55,9 +55,9 @@ IF(MBEDTLS_FOUND)
         MESSAGE(STATUS "  Crypto: ${MBEDCRYPTO_LIBRARY}")
     ENDIF(NOT MBEDTLS_FIND_QUIETLY)
 ELSE(MBEDTLS_FOUND)
-    IF(MBEDTLS_FIND_REQUIRED)
+    IF(mbedTLS_FIND_REQUIRED)
         MESSAGE(FATAL_ERROR "Could not find mbedTLS")
-    ENDIF(MBEDTLS_FIND_REQUIRED)
+    ENDIF(mbedTLS_FIND_REQUIRED)
 ENDIF(MBEDTLS_FOUND)
 
 MARK_AS_ADVANCED(
@@ -67,4 +67,4 @@ MARK_AS_ADVANCED(
         MBEDTLS_LIBRARY
         MBEDX509_LIBRARY
         MBEDCRYPTO_LIBRARY
-)
\ No newline at end of file
+)