Index: lib/imgui/CMakeLists.txt
--- lib/imgui/CMakeLists.txt.orig
+++ lib/imgui/CMakeLists.txt
@@ -35,7 +35,7 @@ target_include_directories(imgui SYSTEM PUBLIC "${CMAK
 suppress_warnings(imgui)
 
 set_target_properties(imgui PROPERTIES FOLDER "3rdparty")
-TARGET_LINK_LIBRARIES(imgui PUBLIC sdl2)
+TARGET_LINK_LIBRARIES(imgui PUBLIC SDL2)
 target_link_libraries(imgui PUBLIC compiler)
 
 if (FSO_BUILD_WITH_VULKAN)
