diff --git a/Makefile b/Makefile
index 3fd5cab40..d67badfa4 100644
--- a/Makefile
+++ b/Makefile
@@ -54,14 +54,14 @@ doc:
 		    exit 1; \
 		fi; \
 	done
-	
+
 LIBS = 	pjlib/lib/libpj-$(TARGET_NAME).a \
 	pjlib-util/lib/libpjlib-util-$(TARGET_NAME).a \
 	pjnath/lib/libpjnath-$(TARGET_NAME).a \
 	pjmedia/lib/libpjmedia-$(TARGET_NAME).a \
 	pjmedia/lib/libpjmedia-audiodev-$(TARGET_NAME).a \
 	pjmedia/lib/libpjmedia-codec-$(TARGET_NAME).a \
-    	pjsip/lib/libpjsip-$(TARGET_NAME).a \
+	pjsip/lib/libpjsip-$(TARGET_NAME).a \
 	pjsip/lib/libpjsip-ua-$(TARGET_NAME).a \
 	pjsip/lib/libpjsip-simple-$(TARGET_NAME).a \
 	pjsip/lib/libpjsua-$(TARGET_NAME).a
@@ -133,6 +133,7 @@ install:
 		sed -e "s!@LIBDIR@!$(libdir)!" | \
 		sed -e "s/@PJ_VERSION@/$(PJ_VERSION)/" | \
 		sed -e "s!@PJ_INSTALL_LDFLAGS@!$(PJ_INSTALL_LDFLAGS)!" | \
+		sed -e "s!@PJ_INSTALL_LDFLAGS_PRIVATE@!$(PJ_INSTALL_LDFLAGS_PRIVATE)!" | \
 		sed -e "s!@PJ_INSTALL_CFLAGS@!$(PJ_INSTALL_CFLAGS)!" > $(DESTDIR)/$(libdir)/pkgconfig/libpjproject.pc
 
 uninstall:
diff --git a/build.mak.in b/build.mak.in
index a9078bb25..1a18a8513 100644
--- a/build.mak.in
+++ b/build.mak.in
@@ -318,4 +318,5 @@ export PJ_INSTALL_DIR := @prefix@
 export PJ_INSTALL_INC_DIR := @includedir@
 export PJ_INSTALL_LIB_DIR := @libdir@
 export PJ_INSTALL_CFLAGS := -I$(PJ_INSTALL_INC_DIR) -DPJ_AUTOCONF=1 @ac_cflags@
-export PJ_INSTALL_LDFLAGS := -L$(PJ_INSTALL_LIB_DIR) $(APP_LDXXLIBS)
+export PJ_INSTALL_LDFLAGS_PRIVATE := $(APP_THIRD_PARTY_LIBS) $(APP_THIRD_PARTY_EXT) @LIBS@
+export PJ_INSTALL_LDFLAGS := -L$(PJ_INSTALL_LIB_DIR) $(filter-out $(PJ_INSTALL_LDFLAGS_PRIVATE),$(APP_LDXXLIBS))
diff --git a/libpjproject.pc.in b/libpjproject.pc.in
index 30ea05c07..4372d5016 100644
--- a/libpjproject.pc.in
+++ b/libpjproject.pc.in
@@ -10,4 +10,5 @@ Description: Multimedia communication library
 URL: http://www.pjsip.org
 Version: @PJ_VERSION@
 Libs: @PJ_INSTALL_LDFLAGS@
+Libs.private: @PJ_INSTALL_LDFLAGS_PRIVATE@
 Cflags: @PJ_INSTALL_CFLAGS@