Index: trunk/src_plugins/export_openems/export_openems.c
===================================================================
--- trunk/src_plugins/export_openems/export_openems.c	(revision 28111)
+++ trunk/src_plugins/export_openems/export_openems.c	(revision 28112)
@@ -251,7 +251,7 @@
 	if (is_str)
 		pcb_fprintf(ctx->f, "%s", ctx->options[opt].str);
 	else
-		pcb_fprintf(ctx->f, "%mm", ctx->options[opt].crd);
+		pcb_fprintf(ctx->f, "%.09mm", ctx->options[opt].crd);
 }
 
 static void openems_write_layers(wctx_t *ctx)