diff --git a/test/libyul/yulInterpreterTests/exp.yul b/test/libyul/yulInterpreterTests/exp.yul
new file mode 100644
index 000000000..1cdba5839
--- /dev/null
+++ b/test/libyul/yulInterpreterTests/exp.yul
@@ -0,0 +1,9 @@
+{
+  mstore(0, exp(3,not(1)))
+}
+// ----
+// Trace:
+//   MSTORE_AT_SIZE(0, 32) [8e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e39]
+// Memory dump:
+//      0: 8e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e38e39
+// Storage dump:
diff --git a/test/tools/yulInterpreter/EVMInstructionInterpreter.cpp b/test/tools/yulInterpreter/EVMInstructionInterpreter.cpp
index 4fea1b50c..1a03704b4 100644
--- a/test/tools/yulInterpreter/EVMInstructionInterpreter.cpp
+++ b/test/tools/yulInterpreter/EVMInstructionInterpreter.cpp
@@ -42,7 +42,7 @@ u256 exp256(u256 _base, u256 _exponent)
 	u256 result = 1;
 	while (_exponent)
 	{
-		if (static_cast<limb_type>(_exponent) & 1)	// If exponent is odd.
+		if (boost::multiprecision::bit_test(_exponent, 0))
 			result *= _base;
 		_base *= _base;
 		_exponent >>= 1;