diff --git a/README.md b/README.md
index c8d4dbb38..7b7c33683 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Benchmarks
 Example input files for Storm can be obtained from  
 https://github.com/moves-rwth/storm-examples.
 
-Various Benchmarks together with example invocations of Storm can be found at the [Quantitative Verification Benchmark Suite (QVBS)](http://qcomp.org/benchmarks).
+Various Benchmarks together with example invocations of Storm can be found at the [Quantitative Verification Benchmark Set (QVBS)](http://qcomp.org/benchmarks).
 
 Further examples and benchmarks can be found in the following repositories:
 
diff --git a/src/storm-parsers/parser/ExpressionParser.cpp b/src/storm-parsers/parser/ExpressionParser.cpp
index 481274b13..d2b0a5318 100644
--- a/src/storm-parsers/parser/ExpressionParser.cpp
+++ b/src/storm-parsers/parser/ExpressionParser.cpp
@@ -91,9 +91,9 @@ namespace storm {
             unaryExpression.name("unary expression");
             
             if (allowBacktracking) {
-                infixPowerModuloExpression = unaryExpression[qi::_val = qi::_1] >> -(infixPowerModuloOperator_ >> expression)[qi::_val = phoenix::bind(&ExpressionCreator::createPowerModuloExpression, phoenix::ref(*expressionCreator), qi::_val, qi::_1, qi::_2, qi::_pass)];
+                infixPowerModuloExpression = unaryExpression[qi::_val = qi::_1] >> -(infixPowerModuloOperator_ >> unaryExpression)[qi::_val = phoenix::bind(&ExpressionCreator::createPowerModuloExpression, phoenix::ref(*expressionCreator), qi::_val, qi::_1, qi::_2, qi::_pass)];
             } else {
-                infixPowerModuloExpression = unaryExpression[qi::_val = qi::_1] > -(infixPowerModuloOperator_ >> expression)[qi::_val = phoenix::bind(&ExpressionCreator::createPowerModuloExpression, phoenix::ref(*expressionCreator), qi::_val, qi::_1, qi::_2, qi::_pass)];
+                infixPowerModuloExpression = unaryExpression[qi::_val = qi::_1] > -(infixPowerModuloOperator_ >> unaryExpression)[qi::_val = phoenix::bind(&ExpressionCreator::createPowerModuloExpression, phoenix::ref(*expressionCreator), qi::_val, qi::_1, qi::_2, qi::_pass)];
             }
             infixPowerModuloExpression.name("(infix) power/modulo expression");
             
diff --git a/src/storm/storage/expressions/ToRationalFunctionVisitor.cpp b/src/storm/storage/expressions/ToRationalFunctionVisitor.cpp
index 870014f60..38d5850c3 100644
--- a/src/storm/storage/expressions/ToRationalFunctionVisitor.cpp
+++ b/src/storm/storage/expressions/ToRationalFunctionVisitor.cpp
@@ -54,7 +54,7 @@ namespace storm {
                     return firstOperandAsRationalFunction / secondOperandAsRationalFunction;
                     break;
                 case BinaryNumericalFunctionExpression::OperatorType::Power:
-                    STORM_LOG_THROW(storm::utility::isInteger(secondOperandAsRationalFunction), storm::exceptions::InvalidArgumentException, "Exponent of power operator must be a positive integer.");
+                    STORM_LOG_THROW(storm::utility::isInteger(secondOperandAsRationalFunction), storm::exceptions::InvalidArgumentException, "Exponent of power operator must be a positive integer but is " << secondOperandAsRationalFunction << ".");
                     exponentAsInteger = storm::utility::convertNumber<uint_fast64_t>(secondOperandAsRationalFunction);
                     return storm::utility::pow(firstOperandAsRationalFunction, exponentAsInteger);
                     break;
diff --git a/src/test/storm/transformer/EndComponentEliminatorTest.cpp b/src/test/storm/transformer/EndComponentEliminatorTest.cpp
index 3dd19899f..7992a60fb 100644
--- a/src/test/storm/transformer/EndComponentEliminatorTest.cpp
+++ b/src/test/storm/transformer/EndComponentEliminatorTest.cpp
@@ -98,7 +98,7 @@ TEST(NeutralECRemover, SimpleModelTest) {
             ASSERT_LT(expectedNewState, std::numeric_limits<uint_fast64_t>::max()) << " Mapping does not match for oldState " << oldState;
             actualToExpectedStateMapping[actualNewState] = expectedNewState;
         } else {
-            ASSERT_LT(expectedNewState, actualNewState) << " Mapping does not match for oldState " << oldState;
+            ASSERT_EQ(expectedNewState, actualNewState) << " Mapping does not match for oldState " << oldState;
         }
     }
     std::vector<uint64_t> actualToExpectedRowMapping;