diff --git a/contracts/libraries/TickMath.sol b/contracts/libraries/TickMath.sol
index ee48fee54..39941831a 100644
--- a/contracts/libraries/TickMath.sol
+++ b/contracts/libraries/TickMath.sol
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
-pragma solidity >=0.5.0 <0.8.0;
+pragma solidity >=0.5.0;
 
 /// @title Math library for computing sqrt prices from ticks and vice versa
 /// @notice Computes sqrt price for ticks of size 1.0001, i.e. sqrt(1.0001^tick) as fixed point Q64.96 numbers. Supports
@@ -22,7 +22,7 @@ library TickMath {
     /// at the given tick
     function getSqrtRatioAtTick(int24 tick) internal pure returns (uint160 sqrtPriceX96) {
         uint256 absTick = tick < 0 ? uint256(-int256(tick)) : uint256(int256(tick));
-        require(absTick <= uint256(MAX_TICK), 'T');
+        require(absTick <= uint256(uint24(MAX_TICK)), "T");
 
         uint256 ratio = absTick & 0x1 != 0 ? 0xfffcb933bd6fad37aa2d162d1a594001 : 0x100000000000000000000000000000000;
         if (absTick & 0x2 != 0) ratio = (ratio * 0xfff97272373d413259a46990580e213a) >> 128;
@@ -60,7 +60,7 @@ library TickMath {
     /// @return tick The greatest tick for which the ratio is less than or equal to the input ratio
     function getTickAtSqrtRatio(uint160 sqrtPriceX96) internal pure returns (int24 tick) {
         // second inequality must be < because the price can never reach the price at the max tick
-        require(sqrtPriceX96 >= MIN_SQRT_RATIO && sqrtPriceX96 < MAX_SQRT_RATIO, 'R');
+        require(sqrtPriceX96 >= MIN_SQRT_RATIO && sqrtPriceX96 < MAX_SQRT_RATIO, "R");
         uint256 ratio = uint256(sqrtPriceX96) << 32;
 
         uint256 r = ratio;