diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0841dbe..54077f5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -163,7 +163,7 @@ if(NOT BUILD_HEADER_ONLY)
   if(INSTALL_PROJECT)
     install(FILES
       ${CMAKE_CURRENT_BINARY_DIR}/miniz.pc
-      DESTINATION ${CMAKE_INSTALL_DATADIR}/pkgconfig)
+      DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
   endif()
 endif()

@@ -173,13 +173,17 @@ set_property(TARGET ${PROJECT_NAME} APPEND PROPERTY
   COMPATIBLE_INTERFACE_STRING ${PROJECT_NAME}_MAJOR_VERSION
 )

+set(MINIZ_INCLUDE_DIR ${CMAKE_INSTALL_INCLUDEDIR})
+
 if(INSTALL_PROJECT)
+  set(MINIZ_INCLUDE_DIR ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME})
+
   install(TARGETS ${PROJECT_NAME} EXPORT ${PROJECT_NAME}Targets
     RUNTIME  DESTINATION ${CMAKE_INSTALL_BINDIR}
     ARCHIVE  DESTINATION ${CMAKE_INSTALL_LIBDIR}
     LIBRARY  DESTINATION ${CMAKE_INSTALL_LIBDIR}
     # users can use <miniz.h> or <miniz/miniz.h>
-    INCLUDES DESTINATION include ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME}
+    INCLUDES DESTINATION include ${MINIZ_INCLUDE_DIR}
   )

   include(CMakePackageConfigHelpers)
diff --git a/miniz.pc.in b/miniz.pc.in
index 95faf5f..277dfcc 100644
--- a/miniz.pc.in
+++ b/miniz.pc.in
@@ -1,7 +1,7 @@
 prefix=@CMAKE_INSTALL_PREFIX@
 exec_prefix=${prefix}
 libdir=${exec_prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+includedir=${prefix}/@MINIZ_INCLUDE_DIR@

 Name: @PROJECT_NAME@
 Description: @PROJECT_DESCRIPTION@
diff --git a/CMakeLists.txt b/CMakeLists.txt
index cc4ef34..67c42a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -153,6 +153,8 @@ else(AMALGAMATE_SOURCES)
        INSTALL_HEADERS ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}_export.h)
 endif(AMALGAMATE_SOURCES)

+set(MINIZ_INCLUDE_DIR ${CMAKE_INSTALL_INCLUDEDIR})
+
 if(NOT BUILD_HEADER_ONLY)
   target_compile_definitions(${PROJECT_NAME}
     PRIVATE $<$<C_COMPILER_ID:GNU>:_GNU_SOURCE>)
@@ -173,8 +175,6 @@ set_property(TARGET ${PROJECT_NAME} APPEND PROPERTY
   COMPATIBLE_INTERFACE_STRING ${PROJECT_NAME}_MAJOR_VERSION
 )

-set(MINIZ_INCLUDE_DIR ${CMAKE_INSTALL_INCLUDEDIR})
-
 if(INSTALL_PROJECT)
   set(MINIZ_INCLUDE_DIR ${CMAKE_INSTALL_INCLUDEDIR}/${PROJECT_NAME})