diff --git a/src/nostalgia/core/CMakeLists.txt b/src/nostalgia/core/CMakeLists.txt
index 78a6d2adc..66ba3817f 100644
--- a/src/nostalgia/core/CMakeLists.txt
+++ b/src/nostalgia/core/CMakeLists.txt
@@ -4,7 +4,9 @@ add_library(
 		media.cpp
 )
 
-target_compile_options(NostalgiaCore PUBLIC -Wsign-conversion)
+if(NOT MSVC)
+	target_compile_options(NostalgiaCore PUBLIC -Wsign-conversion)
+endif()
 
 target_link_libraries(
 	NostalgiaCore PUBLIC
diff --git a/src/nostalgia/core/studio/CMakeLists.txt b/src/nostalgia/core/studio/CMakeLists.txt
index a3967b0f2..b4727682f 100644
--- a/src/nostalgia/core/studio/CMakeLists.txt
+++ b/src/nostalgia/core/studio/CMakeLists.txt
@@ -11,7 +11,9 @@ add_library(
 		rsrc.qrc
 )
 
-target_compile_options(NostalgiaCore-Studio PRIVATE -Wsign-conversion)
+if(NOT MSVC)
+	target_compile_options(NostalgiaCore-Studio PRIVATE -Wsign-conversion)
+endif()
 
 target_link_libraries(
 	NostalgiaCore-Studio
diff --git a/src/nostalgia/core/userland/CMakeLists.txt b/src/nostalgia/core/userland/CMakeLists.txt
index 8c559fdca..33ba3bf6a 100644
--- a/src/nostalgia/core/userland/CMakeLists.txt
+++ b/src/nostalgia/core/userland/CMakeLists.txt
@@ -3,7 +3,9 @@ add_library(
 		media.cpp
 )
 
-target_compile_options(NostalgiaCore-Userspace PRIVATE -Wsign-conversion)
+if(NOT MSVC)
+	target_compile_options(NostalgiaCore-Userspace PRIVATE -Wsign-conversion)
+endif()
 
 target_link_libraries(
 	NostalgiaCore-Userspace PUBLIC