diff --git a/include/mapnik/util/geometry_to_ds_type.hpp b/include/mapnik/util/geometry_to_ds_type.hpp
index d0db1e284..cff44bc27 100644
--- a/include/mapnik/util/geometry_to_ds_type.hpp
+++ b/include/mapnik/util/geometry_to_ds_type.hpp
@@ -33,7 +33,7 @@
 
 namespace mapnik { namespace util {
 
-    void to_ds_type(mapnik::geometry_container const& paths,
+    static inline void to_ds_type(mapnik::geometry_container const& paths,
                     boost::optional<mapnik::datasource::geometry_t> & result)
     {
         if (paths.size() == 1)
diff --git a/plugins/input/csv/csv_utils.hpp b/plugins/input/csv/csv_utils.hpp
index 127837505..3fdcaa3c8 100644
--- a/plugins/input/csv/csv_utils.hpp
+++ b/plugins/input/csv/csv_utils.hpp
@@ -29,7 +29,7 @@
 
 namespace csv_utils
 {
-    static void fix_json_quoting(std::string & csv_line)
+    static inline void fix_json_quoting(std::string & csv_line)
     {
         std::string wrapping_char;
         std::string::size_type j_idx = std::string::npos;