diff --git a/src/core/math.zig b/src/core/math.zig
index e6f9959..6cb3c23 100644
--- a/src/core/math.zig
+++ b/src/core/math.zig
@@ -4,7 +4,7 @@ pub const IntFittingRange = @import("std").math.IntFittingRange;
 ///
 /// Returns the maximum value of `Integer`.
 ///
-pub fn maxInt(comptime Integer: type) Integer {
+pub fn maxInt(comptime Integer: type) comptime_int {
     return switch (@typeInfo(Integer)) {
         .Int => |info| if (info.bits == 0) 0 else
             ((1 << (info.bits - @boolToInt(info.signedness == .signed))) - 1),