diff --git a/polly/cmake/CMakeLists.txt b/polly/cmake/CMakeLists.txt
index c0c9725b2dc1..62693f3df2a8 100644
--- a/polly/cmake/CMakeLists.txt
+++ b/polly/cmake/CMakeLists.txt
@@ -116,7 +116,7 @@ foreach(tgt IN LISTS POLLY_CONFIG_EXPORTED_TARGETS)
   if (NOT tgt_type STREQUAL "INTERFACE_LIBRARY")
     set(POLLY_EXPORTS
 "set_target_properties(${tgt} PROPERTIES
-        IMPORTED_LOCATION_$<UPPER_CASE:$<CONFIG>> \${CMAKE_CURRENT_LIST_DIR}/${tgt_path})
+        IMPORTED_LOCATION$<$<NOT:$<CONFIG:>>:_<UPPER_CASE:$<CONFIG>> \${CMAKE_CURRENT_LIST_DIR}/${tgt_path})
 ${POLLY_EXPORTS}")
   endif()
 endforeach(tgt)