diff --git a/CMakeLists.txt b/CMakeLists.txt
index a7b6d838..c1a68bca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -95,7 +95,7 @@ IF(NOT OPENJPEG_INSTALL_DATA_DIR)
 ENDIF(NOT OPENJPEG_INSTALL_DATA_DIR)
 
 IF(NOT OPENJPEG_INSTALL_INCLUDE_DIR)
-  SET(OPENJPEG_INSTALL_INCLUDE_DIR "include/")
+  SET(OPENJPEG_INSTALL_INCLUDE_DIR "include/${OPENJPEG_INSTALL_SUBDIR}")
 ENDIF(NOT OPENJPEG_INSTALL_INCLUDE_DIR)
 
 IF(NOT OPENJPEG_INSTALL_MAN_DIR)
diff --git a/libopenjpeg/CMakeLists.txt b/libopenjpeg/CMakeLists.txt
index feb2c8af..31498830 100644
--- a/libopenjpeg/CMakeLists.txt
+++ b/libopenjpeg/CMakeLists.txt
@@ -55,7 +55,7 @@ INSTALL(TARGETS ${OPENJPEG_LIBRARY_NAME}
 
 # Install includes files
 INSTALL(FILES openjpeg.h
-  DESTINATION ${OPENJPEG_INSTALL_INCLUDE_DIR}/${OPENJPEG_INSTALL_SUBDIR} COMPONENT Headers
+  DESTINATION ${OPENJPEG_INSTALL_INCLUDE_DIR} COMPONENT Headers
 )
 
 # install man page of the library
diff --git a/libopenjpeg1.pc.cmake b/libopenjpeg1.pc.cmake
index 35f8ac5a..962d8b21 100644
--- a/libopenjpeg1.pc.cmake
+++ b/libopenjpeg1.pc.cmake
@@ -2,7 +2,7 @@ prefix=@CMAKE_INSTALL_PREFIX@
 bindir=${prefix}/@OPENJPEG_INSTALL_BIN_DIR@
 datadir=${prefix}/@OPENJPEG_INSTALL_DATA_DIR@
 libdir=${prefix}/@OPENJPEG_INSTALL_LIB_DIR@
-includedir=${prefix}/@OPENJPEG_INSTALL_INCLUDE_DIR@/@OPENJPEG_INSTALL_SUBDIR@
+includedir=${prefix}/@OPENJPEG_INSTALL_INCLUDE_DIR@
 
 Name: openjpeg
 Description: JPEG2000 files library