diff --git a/cmake/libappimage.pc.in b/cmake/libappimage.pc.in
index 32682d86..6bff1e1a 100644
--- a/cmake/libappimage.pc.in
+++ b/cmake/libappimage.pc.in
@@ -1,7 +1,6 @@
 prefix=@CMAKE_INSTALL_PREFIX@
-# Use prefix as base path to make the package relocatable
-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+libdir=@CMAKE_INSTALL_REL_LIBDIR@
+includedir=@CMAKE_INSTALL_REL_INCLUDEDIR@
 
 Name: @PROJECT_NAME@
 Description: AppImage management and desktop integration
diff --git a/cmake/scripts.cmake b/cmake/scripts.cmake
index 0228e739..6482440a 100644
--- a/cmake/scripts.cmake
+++ b/cmake/scripts.cmake
@@ -257,6 +257,6 @@ function(configure_libappimage_module target)
     target_include_directories(${target}
         PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include/>
         PRIVATE $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src/libappimage>
-        INTERFACE $<INSTALL_INTERFACE:include/>
+        INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/>
     )
 endfunction()
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 9737205b..17a6cb3f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -47,6 +47,17 @@ install(
 
 if(NOT LIBAPPIMAGE_SHARED_ONLY)
     # pkg-config
+    # Use prefix as base path to make the package relocatable, when possible
+    if(IS_ABSOLUTE "${CMAKE_INSTALL_INCLUDEDIR}")
+        set(CMAKE_INSTALL_REL_INCLUDEDIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+    else()
+        set(CMAKE_INSTALL_REL_INCLUDEDIR "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
+    endif()
+    if(IS_ABSOLUTE "${CMAKE_INSTALL_LIBDIR}")
+        set(CMAKE_INSTALL_REL_LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}")
+    else()
+        set(CMAKE_INSTALL_REL_LIBDIR "\${prefix}/${CMAKE_INSTALL_LIBDIR}")
+    endif()
     configure_file("${PROJECT_SOURCE_DIR}/cmake/libappimage.pc.in" "${PROJECT_BINARY_DIR}/libappimage.pc" @ONLY)
 
     install(FILES "${PROJECT_BINARY_DIR}/libappimage.pc"
diff --git a/src/libappimage/CMakeLists.txt b/src/libappimage/CMakeLists.txt
index 47005221..992b5fad 100644
--- a/src/libappimage/CMakeLists.txt
+++ b/src/libappimage/CMakeLists.txt
@@ -70,13 +70,13 @@ install(
 # install public headers
 install(
     DIRECTORY ${PROJECT_SOURCE_DIR}/include/appimage/
-    DESTINATION include/appimage
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/appimage"
     COMPONENT libappimage-dev
 )
 
 install(
     DIRECTORY ${PROJECT_BINARY_DIR}/generated-headers/appimage/
-    DESTINATION include/appimage
+    DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/appimage"
     COMPONENT libappimage-dev
 )
 
diff --git a/src/libappimage_shared/CMakeLists.txt b/src/libappimage_shared/CMakeLists.txt
index ef7238bb..234414d3 100644
--- a/src/libappimage_shared/CMakeLists.txt
+++ b/src/libappimage_shared/CMakeLists.txt
@@ -13,7 +13,7 @@ add_library(libappimage_shared STATIC
 set_target_properties(libappimage_shared PROPERTIES PREFIX "")
 target_include_directories(libappimage_shared PUBLIC
     $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
-    $<INSTALL_INTERFACE:include>
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 set_property(TARGET libappimage_shared PROPERTY PUBLIC_HEADER ${libappimage_shared_public_header})
 target_link_libraries(libappimage_shared PRIVATE libappimage_hashlib)