diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index 5ca1b9e..b8d9288 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -928,6 +928,7 @@ FuncType parse_func_name(char *func_name, Arg *arg, char *arg_value,
 		(*arg).f = atof(arg_value);
 	} else if (strcmp(func_name, "switch_proportion_preset") == 0) {
 		func = switch_proportion_preset;
+		(*arg).i = parse_circle_direction(arg_value);
 	} else if (strcmp(func_name, "viewtoleft") == 0) {
 		func = viewtoleft;
 		(*arg).i = atoi(arg_value);
diff --git a/src/dispatch/bind_declare.h b/src/dispatch/bind_declare.h
index 22ef612..7dced53 100644
--- a/src/dispatch/bind_declare.h
+++ b/src/dispatch/bind_declare.h
@@ -69,4 +69,4 @@ int32_t setoption(const Arg *arg);
 int32_t disable_monitor(const Arg *arg);
 int32_t enable_monitor(const Arg *arg);
 int32_t toggle_monitor(const Arg *arg);
-int32_t scroller_stack(const Arg *arg);
\ No newline at end of file
+int32_t scroller_stack(const Arg *arg);
diff --git a/src/dispatch/bind_define.h b/src/dispatch/bind_define.h
index 39f57c8..e8755fa 100644
--- a/src/dispatch/bind_define.h
+++ b/src/dispatch/bind_define.h
@@ -1057,13 +1057,28 @@ int32_t switch_proportion_preset(const Arg *arg) {
 		for (int32_t i = 0; i < config.scroller_proportion_preset_count; i++) {
 			if (config.scroller_proportion_preset[i] ==
 				tc->scroller_proportion) {
-				if (i == config.scroller_proportion_preset_count - 1) {
-					target_proportion = config.scroller_proportion_preset[0];
-					break;
+
+				if (arg->i == NEXT) {
+					if (i == config.scroller_proportion_preset_count - 1) {
+						target_proportion =
+							config.scroller_proportion_preset[0];
+						break;
+					} else {
+						target_proportion =
+							config.scroller_proportion_preset[i + 1];
+						break;
+					}
 				} else {
-					target_proportion =
-						config.scroller_proportion_preset[i + 1];
-					break;
+					if (i == 0) {
+						target_proportion =
+							config.scroller_proportion_preset
+								[config.scroller_proportion_preset_count - 1];
+						break;
+					} else {
+						target_proportion =
+							config.scroller_proportion_preset[i - 1];
+						break;
+					}
 				}
 			}
 		}
@@ -1848,4 +1863,4 @@ int32_t scroller_stack(const Arg *arg) {
 
 	arrange(selmon, false, false);
 	return 0;
-}
\ No newline at end of file
+}