diff --git a/cmake/Corrosion.cmake b/cmake/Corrosion.cmake
index fbd99719..9b767bd7 100644
--- a/cmake/Corrosion.cmake
+++ b/cmake/Corrosion.cmake
@@ -245,7 +245,7 @@ function(_corrosion_copy_byproduct_deferred target_name output_dir_prop_name car
                     "Internal error: Exactly one filename should be passed for executable types.")
         endif()
         _corrosion_bin_target_suffix(${target_name} "suffix")
-        if(suffix AND (NOT ("${filenames}" MATCHES "\.pdb$")))
+        if(suffix AND (NOT ("${filenames}" MATCHES ".*\.pdb$")))
             message(STATUS "Appending suffix to filename ${file_names}")
             # For bin targets we know that there is only one target, not a list.
             string(APPEND  "file_names" "${suffix}")