diff --git a/Makefile b/Makefile
index b809463..8bce7a7 100644
--- a/Makefile
+++ b/Makefile
@@ -64,6 +64,7 @@ ${PROJECT}.pc: ${PROJECT}.pc.in config.mk
 	$(QUIET)echo version=${VERSION} >> ${PROJECT}.pc
 	$(QUIET)echo includedir=${PREFIX}/include >> ${PROJECT}.pc
 	$(QUIET)echo plugindir=${PLUGINDIR} >> ${PROJECT}.pc
+	$(QUIET)echo GTK_VERSION=${ZATHURA_GTK_VERSION} >> ${PROJECT}.pc
 	$(QUIET)cat ${PROJECT}.pc.in >> ${PROJECT}.pc
 
 valgrind: debug
diff --git a/tests/Makefile b/tests/Makefile
index 272a112..bcb0630 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -46,7 +46,7 @@ ${PROJECT}: options ${OBJECTS}
 ${OBJECTS}: ../config.mk
 
 clean:
-	$(QUIET)rm -rf ${OBJECTS} ${PROJECT}
+	$(QUIET)rm -rf ${OBJECTS} ${PROJECT} *.gcno *.gcda
 
 .PHONY: all options clean debug
 
diff --git a/zathura.pc.in b/zathura.pc.in
index 6e36e4f..659ca85 100644
--- a/zathura.pc.in
+++ b/zathura.pc.in
@@ -6,4 +6,4 @@ Description: document viewer
 Version: ${version}
 URL: http://pwmt.org/projects/zathura
 Cflags: ${INC_PATH}
-Libs:
+Requires.private: girara-gtk${GTK_VERSION} gtk+-${GTK_VERSION}-0