diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1f7fe67c0..2bb82ca4e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -159,12 +159,16 @@ target_link_libraries(86Box PNG::PNG)
 
 if(VCPKG_TOOLCHAIN)
 	# vcpkg includes a config file for rtmidi
-	find_package(RtMidi)
+	find_package(RtMidi REQUIRED)
 	target_link_libraries(86Box RtMidi::rtmidi)
 else()
 	find_package(PkgConfig REQUIRED)
 	pkg_check_modules(RTMIDI REQUIRED IMPORTED_TARGET rtmidi)
 	target_link_libraries(86Box PkgConfig::RTMIDI)
+
+	if(WIN32)
+		target_link_libraries(PkgConfig::RTMIDI INTERFACE winmm)
+	endif()
 endif()
 
 configure_file(include/86box/version.h.in include/86box/version.h @ONLY)