diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4d3cae2326..7954107f8f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -195,6 +195,7 @@ foreach(_component IN LISTS casacpp_all_components)
 endforeach()
 
 # Install pkg-config support file
+set(pc_req_public "casacore cfitsio libxml-2.0 gsl protobuf grpc++ fftw3 libsakura")
 CONFIGURE_FILE("casacpp.pc.in" "casacpp.pc" @ONLY)
 set(CASACPP_PKGCONFIG_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/lib/pkgconfig")
 INSTALL(FILES "${CMAKE_CURRENT_BINARY_DIR}/casacpp.pc" DESTINATION "${CASACPP_PKGCONFIG_INSTALL_PREFIX}")
diff --git a/casacpp.pc.in b/casacpp.pc.in
index 08a996b2c3..699cfb7319 100644
--- a/casacpp.pc.in
+++ b/casacpp.pc.in
@@ -9,4 +9,4 @@ Version: @PROJECT_VERSION@
 Requires: @pc_req_public@
 Requires.private: @pc_req_private@
 Libs: -L${libdir} @PRIVATE_LIBS@
-Cflags: -DWITHOUT_ACS -DWITHOUT_BOOST -I${includedir}/casacpp -I${includedir}/casacpp/protobuf_generated -I@CASACORE_INCLUDE_DIRS@ -I@CFITSIO_INCLUDE_DIRS@ -I@LibXML_INCLUDE_DIRS@ -I@GSL_INCLUDE_DIRS@
+Cflags: -DWITHOUT_ACS -DWITHOUT_BOOST -I${includedir}/casacpp -I${includedir}/casacpp/protobuf_generated