diff --git a/src/geo_iterator/grib_iterator_class_gen.cc b/src/geo_iterator/grib_iterator_class_gen.cc
index ea813dd8b..3f8fadc02 100644
--- a/src/geo_iterator/grib_iterator_class_gen.cc
+++ b/src/geo_iterator/grib_iterator_class_gen.cc
@@ -22,11 +22,11 @@ int Gen::init(grib_handle* h, grib_arguments* args)
     const char* s_rawData   = NULL;
     const char* s_numPoints = NULL;
     long numberOfPoints     = 0;
-    int carg                   = 1;
+    int carg_                   = 1;
 
-    s_numPoints   = grib_arguments_get_name(h, args, carg++);
-    missingValue_ = grib_arguments_get_name(h, args, carg++);
-    s_rawData     = grib_arguments_get_name(h, args, carg++);
+    s_numPoints   = grib_arguments_get_name(h, args, carg_++);
+    missingValue_ = grib_arguments_get_name(h, args, carg_++);
+    s_rawData     = grib_arguments_get_name(h, args, carg_++);
 
     data_ = NULL;
     if ((err = grib_get_size(h, s_rawData, &dli)) != GRIB_SUCCESS)
diff --git a/src/geo_iterator/grib_iterator_class_gen.h b/src/geo_iterator/grib_iterator_class_gen.h
index ace2c0232..0cca14c08 100644
--- a/src/geo_iterator/grib_iterator_class_gen.h
+++ b/src/geo_iterator/grib_iterator_class_gen.h
@@ -29,6 +29,7 @@ public:
     bool has_next() const override;
 
 protected:
+    int carg_;
     double* lats_;
     double* lons_;