diff --git a/Makefile b/Makefile
index 3c7403c5..87aa699b 100644
--- a/Makefile
+++ b/Makefile
@@ -634,7 +634,8 @@ $(foreach build_type,$(BUILD_TYPES),$(eval $(call build_rules,$(build_type))))
 
 src/version.h : $(firstword $(MAKEFILE_LIST))
 	@echo [version] $@
-	@echo -e "#define VERSION_NUMBER \"$(VERSION_NUMBER)\"\n#define VERSION_NAME \"$(VERSION_NAME)\"\n" > $@
+	@echo "#define VERSION_NUMBER \"$(VERSION_NUMBER)\"" > $@
+	@echo "#define VERSION_NAME \"$(VERSION_NAME)\"" >> $@
 
 src/android/AndroidManifest.xml : $(firstword $(MAKEFILE_LIST))
 	@echo [android_version] $@
diff --git a/src/version.h b/src/version.h
index 5d02d73e..636d9786 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,3 +1,2 @@
-#define VERSION_NUMBER "0.0.12"
+#define VERSION_NUMBER "0.0.13-wip"
 #define VERSION_NAME "Where everybody knows your name."
-