diff --git a/CMake/FindWolfSSL.cmake b/CMake/FindWolfSSL.cmake
index c4f28dfaa9..cea44b00a1 100644
--- a/CMake/FindWolfSSL.cmake
+++ b/CMake/FindWolfSSL.cmake
@@ -33,12 +33,10 @@
 if(DEFINED WolfSSL_INCLUDE_DIR AND NOT DEFINED WOLFSSL_INCLUDE_DIR)
   message(WARNING "WolfSSL_INCLUDE_DIR is deprecated, use WOLFSSL_INCLUDE_DIR instead.")
   set(WOLFSSL_INCLUDE_DIR "${WolfSSL_INCLUDE_DIR}")
-  unset(WolfSSL_INCLUDE_DIR)
 endif()
 if(DEFINED WolfSSL_LIBRARY AND NOT DEFINED WOLFSSL_LIBRARY)
   message(WARNING "WolfSSL_LIBRARY is deprecated, use WOLFSSL_LIBRARY instead.")
   set(WOLFSSL_LIBRARY "${WolfSSL_LIBRARY}")
-  unset(WolfSSL_LIBRARY)
 endif()
 
 if(CURL_USE_PKGCONFIG)
diff --git a/CMake/FindZstd.cmake b/CMake/FindZstd.cmake
index 72feb30c09..82fba01112 100644
--- a/CMake/FindZstd.cmake
+++ b/CMake/FindZstd.cmake
@@ -33,12 +33,10 @@
 if(DEFINED Zstd_INCLUDE_DIR AND NOT DEFINED ZSTD_INCLUDE_DIR)
   message(WARNING "Zstd_INCLUDE_DIR is deprecated, use ZSTD_INCLUDE_DIR instead.")
   set(ZSTD_INCLUDE_DIR "${Zstd_INCLUDE_DIR}")
-  unset(Zstd_INCLUDE_DIR)
 endif()
 if(DEFINED Zstd_LIBRARY AND NOT DEFINED ZSTD_LIBRARY)
   message(WARNING "Zstd_LIBRARY is deprecated, use ZSTD_LIBRARY instead.")
   set(ZSTD_LIBRARY "${Zstd_LIBRARY}")
-  unset(Zstd_LIBRARY)
 endif()
 
 if(CURL_USE_PKGCONFIG)