diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99f3648..993ada0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -71,6 +71,7 @@ endif()
 ##################  find packages  ################################
 
 if(QT5_BUILD)
+  set(QT_DEPS Qt5Core)
   find_package(Qt5 COMPONENTS Core DBus Network Xml REQUIRED CONFIG)
   if(Qt5_POSITION_INDEPENDENT_CODE)
     set(CMAKE_POSITION_INDEPENDENT_CODE ON)
@@ -83,6 +84,7 @@ if(QT5_BUILD)
   set(SOPRANO_GENERIC_SOVERSION "${_SOPRANO_GENERIC_SOVERSION}")
   set(SOPRANO_NON_GENERIC_SOVERSION "${_SOPRANO_NON_GENERIC_SOVERSION}")
 else()
+  set(QT_DEPS QtCore)
   set(QT_USE_IMPORTED_TARGETS TRUE)
   find_package(Qt4 4.5.0)
   set_package_properties(Qt4 PROPERTIES
diff --git a/soprano.pc.cmake b/soprano.pc.cmake
index 4c55fe3..d87f5d5 100644
--- a/soprano.pc.cmake
+++ b/soprano.pc.cmake
@@ -6,7 +6,7 @@ includedir=@INCLUDE_INSTALL_DIR@
 Name: Soprano
 Description: Powerful RDF storage, parsing, and serialization framework
 URL=http://soprano.sourceforge.net/
-Requires: QtCore
+Requires: @QT_DEPS@
 Version: @SOPRANO_VERSION_STRING@
 Libs: -L${libdir} -lsoprano
 Cflags: -I${includedir} -I${includedir}/soprano