diff --git a/PAM/ssh/lib/CMakeLists.txt b/PAM/ssh/lib/CMakeLists.txt
index 7800be2..332fd7d 100755
--- a/PAM/ssh/lib/CMakeLists.txt
+++ b/PAM/ssh/lib/CMakeLists.txt
@@ -50,7 +50,7 @@ elseif(${outOS} MATCHES "opensuse-leap" )
     message(INFO " detected suse base system")
     set(_destination /lib64/security/)
 elseif(${outOS} MATCHES "debian|ubuntu")
-    if(CMAKE_GENERATOR_PLATFORM STREQUAL "ARM64")
+    if(TARGET_ARCH STREQUAL "ARM64")
         message(INFO " detected debian arm64 based system")
         set(_destination /usr/lib/security/)
     else()