diff --git a/Makefile b/Makefile
index 79a6a6b331fe6..c2390e04882ba 100644
--- a/Makefile
+++ b/Makefile
@@ -956,6 +956,7 @@ SOURCES += $(THIRD_PARTY_SOURCES)
 IMGUI_SOURCES = $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
 
 ifeq ($(SDL), 1)
+	OTHERS += -DIMGUI_DISABLE_OBSOLETE_KEYIO
 	IMGUI_SOURCES += $(IMGUI_DIR)/imgui_impl_sdl2.cpp $(IMGUI_DIR)/imgui_impl_sdlrenderer2.cpp
 else
 	IMGUI_SOURCES += $(IMTUI_DIR)/imtui-impl-ncurses.cpp $(IMTUI_DIR)/imtui-impl-text.cpp
diff --git a/msvc-full-features/Cataclysm-common.props b/msvc-full-features/Cataclysm-common.props
index 832e0c55d5e3d..abf9ac68d6c9c 100644
--- a/msvc-full-features/Cataclysm-common.props
+++ b/msvc-full-features/Cataclysm-common.props
@@ -55,7 +55,7 @@
       <PrecompiledHeader>Use</PrecompiledHeader>
       <ForcedIncludeFiles>$(MSBuildThisFileDirectory)..\pch\main-pch.hpp</ForcedIncludeFiles>
       <DisableSpecificWarnings>4661;4819;4146;26495;26444;26451;4068;6319;6237</DisableSpecificWarnings>
-      <PreprocessorDefinitions>_SCL_SECURE_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;LOCALIZE;USE_VCPKG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_SCL_SECURE_NO_WARNINGS;_CRT_SECURE_NO_WARNINGS;WIN32_LEAN_AND_MEAN;LOCALIZE;USE_VCPKG;IMGUI_DISABLE_OBSOLETE_KEYIO;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <PrecompiledHeaderFile>$(MSBuildThisFileDirectory)..\pch\main-pch.hpp</PrecompiledHeaderFile>
     </ClCompile>
diff --git a/src/third-party/CMakeLists.txt b/src/third-party/CMakeLists.txt
index 47f253d903202..f44d9f01880ce 100644
--- a/src/third-party/CMakeLists.txt
+++ b/src/third-party/CMakeLists.txt
@@ -102,6 +102,9 @@ if (TILES)
                 PRIVATE
                 -w
                 )
+
+        add_definitions(-DIMGUI_DISABLE_OBSOLETE_KEYIO)
+
         if (NOT DYNAMIC_LINKING)
             target_link_libraries(imgui PUBLIC
                 SDL2::SDL2-static