diff --git a/GetPrerequisites.cmake-orig b/GetPrerequisites.cmake
index 8f2754e..94ae7d1 100644
--- a/GetPrerequisites.cmake-orig
+++ b/GetPrerequisites.cmake
@@ -144,10 +144,10 @@ function(is_file_executable file result_var)
   get_filename_component(file_full "${file}" ABSOLUTE)
   string(TOLOWER "${file_full}" file_full_lower)
 
-  # If file name ends in .exe on Windows, *assume* executable:
+  # If file name ends in .exe or .dll on Windows, *assume* executable:
   #
   if(WIN32 AND NOT UNIX)
-    if("${file_full_lower}" MATCHES "\\.exe$")
+    if("${file_full_lower}" MATCHES "\\.exe$" OR "${file_full_lower}" MATCHES "\\.dll$")
       set(${result_var} 1 PARENT_SCOPE)
       return()
     endif()