diff --git a/cmake/FindSystemd.cmake b/cmake/FindSystemd.cmake
index c38d62c3..ee5c70d3 100644
--- a/cmake/FindSystemd.cmake
+++ b/cmake/FindSystemd.cmake
@@ -15,12 +15,12 @@ IF (NOT WIN32)
 
     if (SYSTEMD_FOUND)
         execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE}
-            --variable=systemduserunitdir systemd
+            --variable=systemd_user_unit_dir systemd
             OUTPUT_STRIP_TRAILING_WHITESPACE
             OUTPUT_VARIABLE SYSTEMD_USER_UNIT_INSTALL_DIR)
 
         execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE}
-            --variable=systemdsystemunitdir systemd
+            --variable=systemd_system_unit_dir systemd
             OUTPUT_STRIP_TRAILING_WHITESPACE
             OUTPUT_VARIABLE SYSTEMD_SYSTEM_UNIT_INSTALL_DIR)
 
diff --git a/cmake/FindUdev.cmake b/cmake/FindUdev.cmake
index bb33b0c1..35b03ce7 100644
--- a/cmake/FindUdev.cmake
+++ b/cmake/FindUdev.cmake
@@ -21,7 +21,7 @@ if(NOT WIN32)
         endif()
 
         execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE}
-            --variable=udevdir udev
+            --variable=udev_dir udev
             OUTPUT_STRIP_TRAILING_WHITESPACE
             OUTPUT_VARIABLE UDEV_RULES_INSTALL_DIR)