diff --git a/CMakeModules/OsgMacroUtils.cmake b/CMakeModules/OsgMacroUtils.cmake
index ea80b2f01..aa607fa77 100644
--- a/CMakeModules/OsgMacroUtils.cmake
+++ b/CMakeModules/OsgMacroUtils.cmake
@@ -205,6 +205,7 @@ ENDMACRO(SET_OUTPUT_DIR_PROPERTY_260 TARGET_TARGETNAME RELATIVE_OUTDIR)
 #  LIB_NAME  is the name of the target library
 #  TARGET_SRC  are the sources of the target
 #  TARGET_H are the eventual headers of the target
+#  TARGET_H_NO_MODULE_INSTALL are headers that belong to target but shouldn't get installed by the ModuleInstall script
 #  TARGET_LIBRARIES are the libraries to link to that are internal to the project and have d suffix for debug
 #  TARGET_EXTERNAL_LIBRARIES are external libraries and are not differentiated with d suffix
 #  TARGET_LABEL is the label IDE should show up for targets
@@ -219,6 +220,7 @@ MACRO(SETUP_LIBRARY LIB_NAME)
         ADD_LIBRARY(${LIB_NAME}
             ${OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC}
             ${TARGET_H}
+            ${TARGET_H_NO_MODULE_INSTALL}
             ${TARGET_SRC}
         )
         SET_TARGET_PROPERTIES(${LIB_NAME} PROPERTIES FOLDER "OSG Core")
diff --git a/src/osgViewer/CMakeLists.txt b/src/osgViewer/CMakeLists.txt
index c455295e7..76d323525 100644
--- a/src/osgViewer/CMakeLists.txt
+++ b/src/osgViewer/CMakeLists.txt
@@ -52,7 +52,7 @@ IF(WIN32 AND NOT ANDROID)
         ADD_DEFINITIONS(-DOSG_MULTIMONITOR_MULTITHREAD_WIN32_NVIDIA_WORKAROUND)
     ENDIF()
 
-    SET(TARGET_H ${TARGET_H}
+    SET(TARGET_H_NO_MODULE_INSTALL
         ${HEADER_PATH}/api/Win32/GraphicsHandleWin32
         ${HEADER_PATH}/api/Win32/GraphicsWindowWin32
         ${HEADER_PATH}/api/Win32/PixelBufferWin32
@@ -92,7 +92,7 @@ ELSE()
             SET_PROPERTY(SOURCE ${HEADER_PATH}/api/Cocoa/GraphicsWindowCocoa PROPERTY MACOSX_PACKAGE_LOCATION Headers/api/Cocoa)
             SET_PROPERTY(SOURCE ${HEADER_PATH}/api/Cocoa/PixelBufferCocoa PROPERTY MACOSX_PACKAGE_LOCATION Headers/api/Cocoa)
         ELSE()
-            SET(TARGET_H ${TARGET_H} 
+            SET(TARGET_H_NO_MODULE_INSTALL
                 ${HEADER_PATH}/api/Cocoa/GraphicsHandleCocoa
                 ${HEADER_PATH}/api/Cocoa/GraphicsWindowCocoa
                 ${HEADER_PATH}/api/Cocoa/PixelBufferCocoa
@@ -120,7 +120,7 @@ ELSE()
             SET_PROPERTY(SOURCE ${HEADER_PATH}/api/Carbon/GraphicsWindowCarbon PROPERTY MACOSX_PACKAGE_LOCATION Headers/api/Carbon)
             SET_PROPERTY(SOURCE ${HEADER_PATH}/api/Carbon/PixelBufferCarbon PROPERTY MACOSX_PACKAGE_LOCATION Headers/api/Carbon)
         ELSE()
-            SET(TARGET_H ${TARGET_H} 
+            SET(TARGET_H_NO_MODULE_INSTALL
                 ${HEADER_PATH}/api/Carbon/GraphicsHandleCarbon
                 ${HEADER_PATH}/api/Carbon/GraphicsWindowCarbon
                 ${HEADER_PATH}/api/Carbon/PixelBufferCarbon
@@ -147,7 +147,7 @@ ELSE()
 
             SET_PROPERTY(SOURCE ${HEADER_PATH}/api/IOS/GraphicsWindowIOS PROPERTY MACOSX_PACKAGE_LOCATION Headers/api/IOS)
         ELSE()
-            SET(TARGET_H ${TARGET_H} 
+            SET(TARGET_H_NO_MODULE_INSTALL
                 ${HEADER_PATH}/api/IOS/GraphicsWindowIOS
                 #${HEADER_PATH}/api/IOS/PixelBufferIOS
             )
@@ -175,7 +175,7 @@ ELSE()
             SET(OSGVIEWER_USE_XRANDR OFF)
         ENDIF()
 
-        SET(TARGET_H ${TARGET_H}
+        SET(TARGET_H_NO_MODULE_INSTALL
             ${HEADER_PATH}/api/X11/GraphicsHandleX11
             ${HEADER_PATH}/api/X11/GraphicsWindowX11
             ${HEADER_PATH}/api/X11/PixelBufferX11
@@ -250,3 +250,19 @@ IF(MINGW OR CYGWIN)
 ENDIF()
 
 SETUP_LIBRARY(${LIB_NAME})
+
+# install these headers manually since setup_library and moduleinstall
+# wouldn't keep the structure, e.g. api/X11/xyz.h
+FOREACH(HEADERFILE ${TARGET_H_NO_MODULE_INSTALL})
+  # get relative path to graphics system dependant header
+  FILE(RELATIVE_PATH REL_INCLUDEFILE ${HEADER_PATH} ${HEADERFILE})
+  GET_FILENAME_COMPONENT(REL_INCLUDE_PATH ${REL_INCLUDEFILE} PATH)
+
+  INSTALL(FILES ${HEADERFILE} 
+    DESTINATION ${INSTALL_INCDIR}/${LIB_NAME}/${REL_INCLUDE_PATH}
+    COMPONENT libopenscenegraph-dev
+  )
+ENDFOREACH()
+
+# for structure in ide
+SOURCE_GROUP("${HEADERS_GROUP}\\api" FILES ${TARGET_H_NO_MODULE_INSTALL})