diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index a4a2f4ac6..ede9698fd 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -9350,18 +9350,15 @@ void Tokenizer::simplifyMathExpressions()
             tok->str("0");
         }
 
-        //Pythagorean trigonometric identity: pow(sin(x),2n)+pow(cos(x),2n) = 1
-        //Hyperbolic identity: pow(sinh(x),2n)-pow(cosh(x),2n) = -1
-        //2n = any even number
+        //Pythagorean trigonometric identity: pow(sin(x),2)+pow(cos(x),2) = 1
+        //Hyperbolic identity: pow(sinh(x),2)-pow(cosh(x),2) = -1
         if (Token::simpleMatch(tok, "pow (")) {
             if (Token::simpleMatch(tok->tokAt(2), "sin (")) {
                 Token *tok2 = tok->linkAt(3);
-                if (!Token::Match(tok2, ") , %num% ) + pow ( cos (") ||
-                    (MathLib::toLongNumber(tok2->strAt(2)) & 1) == 1)
+                if (!Token::simpleMatch(tok2, ") , 2 ) + pow ( cos ("))
                     continue;
                 Token *tok3 = tok2->tokAt(8);
-                if (!Token::Match(tok3->link(), ") , %num% )") ||
-                    tok3->link()->strAt(2) != tok2->strAt(2))
+                if (!Token::simpleMatch(tok3->link(), ") , 2 )"))
                     continue;
                 if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok3->link()->next())) {
                     Token::eraseTokens(tok, tok3->link()->tokAt(4));
@@ -9369,12 +9366,10 @@ void Tokenizer::simplifyMathExpressions()
                 }
             } else if (Token::simpleMatch(tok->tokAt(2), "sinh (")) {
                 Token *tok2 = tok->linkAt(3);
-                if (!Token::Match(tok2, ") , %num% ) - pow ( cosh (") ||
-                    (MathLib::toLongNumber(tok2->strAt(2)) & 1) == 1)
+                if (!Token::simpleMatch(tok2, ") , 2 ) - pow ( cosh (") )
                     continue;
                 Token *tok3 = tok2->tokAt(8);
-                if (!Token::Match(tok3->link(), ") , %num% )") ||
-                    tok3->link()->strAt(2) != tok2->strAt(2))
+                if (!Token::simpleMatch(tok3->link(), ") , 2 )"))
                     continue;
                 if (tok->tokAt(3)->stringifyList(tok2->next()) == tok3->stringifyList(tok3->link()->next())) {
                     Token::eraseTokens(tok, tok3->link()->tokAt(4));
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 62887076c..9fd3a67af 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -7727,8 +7727,6 @@ private:
                              "    std::cout<<pow(sinh(x),2)-pow(cosh(x),2);\n"
                              "    std::cout<<pow(sin(x*y+z),2)+pow(cos(x*y+z),2);\n"
                              "    std::cout<<pow(sinh(x*y+z),2)-pow(cosh(x*y+z),2);\n"
-                             "    std::cout<<pow(sin(x),4)+pow(cos(x),4);\n"
-                             "    std::cout<<pow(sinh(x),10)-pow(cosh(x),10);\n"
                              "}";
 
         const char expected1[] = "void foo ( ) {\n"
@@ -7744,8 +7742,6 @@ private:
                                  "std :: cout << -1 ;\n"
                                  "std :: cout << 1 ;\n"
                                  "std :: cout << -1 ;\n"
-                                 "std :: cout << 1 ;\n"
-                                 "std :: cout << -1 ;\n"
                                  "}";
         ASSERT_EQUALS(expected1, tokenizeAndStringify(code1));