diff --git a/thirdparty/oplsynth/CMakeLists.txt b/thirdparty/oplsynth/CMakeLists.txt
index 379e72f..af6a69d 100644
--- a/thirdparty/oplsynth/CMakeLists.txt
+++ b/thirdparty/oplsynth/CMakeLists.txt
@@ -15,6 +15,7 @@ file( GLOB HEADER_FILES
 	oplsynth/*.h
 	)
 add_library( oplsynth STATIC
+	${HEADER_FILES}
 	fmopl.cpp
 	musicblock.cpp
 	nukedopl3.cpp
diff --git a/thirdparty/timidity/CMakeLists.txt b/thirdparty/timidity/CMakeLists.txt
index 206422b..10953ec 100644
--- a/thirdparty/timidity/CMakeLists.txt
+++ b/thirdparty/timidity/CMakeLists.txt
@@ -13,6 +13,7 @@ file( GLOB HEADER_FILES
 	timidity/*.h
 	)
 add_library( timidity STATIC
+	${HEADER_FILES}
 	common.cpp
 	instrum.cpp
 	instrum_dls.cpp
diff --git a/thirdparty/timidityplus/CMakeLists.txt b/thirdparty/timidityplus/CMakeLists.txt
index 81470af..e4ccce4 100644
--- a/thirdparty/timidityplus/CMakeLists.txt
+++ b/thirdparty/timidityplus/CMakeLists.txt
@@ -12,6 +12,7 @@ file( GLOB HEADER_FILES
 	timiditypp/*.h
 	)
 add_library( timidityplus STATIC
+	${HEADER_FILES}
 	fft4g.cpp
 	reverb.cpp
 	common.cpp
diff --git a/thirdparty/wildmidi/CMakeLists.txt b/thirdparty/wildmidi/CMakeLists.txt
index 98103ba..33899ab 100644
--- a/thirdparty/wildmidi/CMakeLists.txt
+++ b/thirdparty/wildmidi/CMakeLists.txt
@@ -15,6 +15,7 @@ file( GLOB HEADER_FILES
 	wildmidi/*.h
 	)
 add_library( wildmidi STATIC
+	${HEADER_FILES}
 	file_io.cpp
 	gus_pat.cpp
 	reverb.cpp