diff --git a/Program/zlib1.dll b/Program/zlib1.dll
deleted file mode 100644
index 02c3c742e3..0000000000
Binary files a/Program/zlib1.dll and /dev/null differ
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 78f518fcf8..c581b85884 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -154,7 +154,6 @@ list(APPEND SM_WINDOWS_PROGRAM_DLLS
   "${SM_PROGRAM_DIR}/avutil-52.dll"
   "${SM_PROGRAM_DIR}/parallel_lights_io.dll"
   "${SM_PROGRAM_DIR}/swscale-2.dll"
-  "${SM_PROGRAM_DIR}/zlib1.dll"
 )
 
 if(WIN32)
@@ -615,7 +614,6 @@ if(NOT APPLE)
     install(FILES "${SM_PROGRAM_DIR}/avutil-52.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
     install(FILES "${SM_PROGRAM_DIR}/parallel_lights_io.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
     install(FILES "${SM_PROGRAM_DIR}/swscale-2.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
-    install(FILES "${SM_PROGRAM_DIR}/zlib1.dll" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
     install(FILES "${SM_PROGRAM_DIR}/StepMania.vdi" DESTINATION "${SM_FULL_INSTALLATION_PATH}")
 
     # foreach(SM_WINDOW_DLL "${SM_WINDOWS_PROGRAM_DLLS}")