diff --git a/CMakeLists.txt b/CMakeLists.txt
index d24439472..0fb7e6ec9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,7 @@ set(BUILD_SDL ON CACHE BOOL "Build SDL frontend")
 set(BUILD_PERF OFF CACHE BOOL "Build performance profiling tool")
 file(GLOB ARM_SRC ${CMAKE_SOURCE_DIR}/src/arm/*.c)
 file(GLOB GBA_SRC ${CMAKE_SOURCE_DIR}/src/gba/*.c)
-file(GLOB UTIL_SRC ${CMAKE_SOURCE_DIR}/src/util/*.[cS])
+file(GLOB UTIL_SRC ${CMAKE_SOURCE_DIR}/src/util/*.[cSs])
 file(GLOB VFS_SRC ${CMAKE_SOURCE_DIR}/src/util/vfs/*.c)
 file(GLOB RENDERER_SRC ${CMAKE_SOURCE_DIR}/src/gba/renderers/video-software.c)
 file(GLOB THIRD_PARTY_SRC ${CMAKE_SOURCE_DIR}/src/third-party/inih/*.c)