diff --git a/modules/_private_utils.lua b/modules/_private_utils.lua
index 8376a08..2c4aca0 100644
--- a/modules/_private_utils.lua
+++ b/modules/_private_utils.lua
@@ -5,7 +5,7 @@ local floor   = math.floor
 local ceil    = math.ceil
 
 function private.round(value, precision)
-	if precision then return utils.round(value / precision) * precision end
+	if precision then return private.round(value / precision) * precision end
 	return value >= 0 and floor(value+0.5) or ceil(value-0.5)
 end
 
diff --git a/spec/utils_spec.lua b/spec/utils_spec.lua
index 1b7a8eb..337361e 100644
--- a/spec/utils_spec.lua
+++ b/spec/utils_spec.lua
@@ -27,6 +27,18 @@ describe("utils:", function()
 		local v = utils.decay(0, 1, 0.5, 1)
 		assert.is_true(tolerance(v, 0.39346934028737))
 	end)
+
+	it("rounds a number", function()
+		-- round up
+		local v = utils.round(1.3252525, 0.01)
+		assert.is_true(tolerance(v, 1.33))
+		-- round down
+		v = utils.round(1.3242525, 0.1)
+		assert.is_true(tolerance(v, 1.3))
+		-- no precision
+		v = utils.round(1.3242525)
+		assert.is_true(tolerance(v, 1))
+	end)
 end)
 
 --[[
@@ -37,7 +49,6 @@ tolerance(value, threshold)
 map(value, min_in, max_in, min_out, max_out)
 lerp(progress, low, high)
 smoothstep(progress, low, high)
-round(value, precision)
 wrap(value, limit)
 is_pot(value)
 project_on(out, a, b)