diff --git a/CMakeLists.txt b/CMakeLists.txt
index c7d1fd9..04f96eb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ option(LIB_PROTO_MUTATOR_TESTING "Enable test building" ON)
 option(LIB_PROTO_MUTATOR_DOWNLOAD_PROTOBUF
        "Automatically download working protobuf" OFF)
 option(LIB_PROTO_MUTATOR_WITH_ASAN "Enable address sanitizer" OFF)
-option(PKG_CONFIG_PATH "Directory to install pkgconfig file" "share/pkgconfig")
+set(PKG_CONFIG_PATH "share/pkgconfig" CACHE STRING "Directory to install pkgconfig file")
 set(LIB_PROTO_MUTATOR_FUZZER_LIBRARIES "" CACHE STRING "Fuzzing engine libs")
 
 # External dependencies