diff --git a/CMakeLists.txt b/CMakeLists.txt
index 42c1539a..3143ce36 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -479,7 +479,7 @@ IF(VMIME_HAVE_SASL_SUPPORT)
 	ENDIF()
 
 	SET(VMIME_PKGCONFIG_LIBS "${VMIME_PKGCONFIG_LIBS} ${GSASL_LIBRARIES}")
-	SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} ${GSASL_INCLUDE_DIR}")
+	SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} -I${GSASL_INCLUDE_DIR}")
 	SET(VMIME_PKGCONFIG_REQUIRES "${VMIME_PKGCONFIG_REQUIRES} libgsasl")
 
 ENDIF()
@@ -536,7 +536,7 @@ IF(VMIME_HAVE_TLS_SUPPORT)
 		ENDIF()
 
 		SET(VMIME_PKGCONFIG_LIBS "${VMIME_PKGCONFIG_LIBS} ${GNUTLS_LIBRARY_DIRS} ${GNUTLS_LIBRARY}")
-		SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} ${GNUTLS_INCLUDE_DIR}")
+		SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} -I${GNUTLS_INCLUDE_DIR}")
 		SET(VMIME_PKGCONFIG_REQUIRES "${VMIME_PKGCONFIG_REQUIRES} gnutls")
 
 	ELSEIF(VMIME_TLS_SUPPORT_LIB_IS_OPENSSL)
@@ -555,7 +555,7 @@ IF(VMIME_HAVE_TLS_SUPPORT)
 		ENDIF()
 
 		SET(VMIME_PKGCONFIG_LIBS "${VMIME_PKGCONFIG_LIBS} ${OPENSSL_LIBRARIES}")
-		SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} ${OPENSSL_INCLUDE_DIR}")
+		SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} -I${OPENSSL_INCLUDE_DIR}")
 		SET(VMIME_PKGCONFIG_REQUIRES "${VMIME_PKGCONFIG_REQUIRES} openssl")
 
 	ELSE()
@@ -586,7 +586,7 @@ IF(VMIME_BUILD_SHARED_LIBRARY)
 ENDIF()
 
 SET(VMIME_PKGCONFIG_LIBS "${VMIME_PKGCONFIG_LIBS} ${ICONV_LIBRARIES}")
-SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} ${ICONV_INCLUDE_DIR}")
+SET(VMIME_PKGCONFIG_CFLAGS "${VMIME_PKGCONFIG_CFLAGS} -I${ICONV_INCLUDE_DIR}")
 
 
 ##############################################################################
diff --git a/libvmime.pc.in b/libvmime.pc.in
index ce924a8d..fc1103ef 100644
--- a/libvmime.pc.in
+++ b/libvmime.pc.in
@@ -7,6 +7,7 @@ Name: @VMIME_PACKAGE_NAME@
 Description: @VMIME_PACKAGE_DESCRIPTION@
 Version: @VMIME_PACKAGE_VERSION@
 Requires.private: @VMIME_PKGCONFIG_REQUIRES@
-Libs.private: -L${libdir} -l@VMIME_LIBRARY_NAME@ @VMIME_PKGCONFIG_LIBS@
+Libs: -L${libdir} -l@VMIME_LIBRARY_NAME@
+Libs.private: @VMIME_PKGCONFIG_LIBS@
 Cflags: -I${includedir}/ @VMIME_PKGCONFIG_CFLAGS@