diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 7b4dc00cf..13ce24d1c 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -8342,7 +8342,8 @@ bool Tokenizer::isTwoNumber(const std::string &s)
 // sqrtf(), sqrtl(), exp(), expf(), expl(), exp2(),
 // exp2f(), exp2l(), log2(), log2f(), log2l(), log1p(),
 // log1pf(), log1pl(), log10(), log10l(), log10f(),
-// log(),logf(),logl(),logb(),logbf(),logbl()
+// log(),logf(),logl(),logb(),logbf(),logbl(), acosh()
+// acoshf(), acoshl()
 // in the tokenlist.
 //
 // Reference:
@@ -8419,8 +8420,11 @@ bool Tokenizer::simplifyMathFunctions()
                 tok->str("0"); // insert result into token list
                 simplifcationMade = true;
             }
-        } else if (Token::Match(tok, "log2|log2f|log2l|log|logf|logl|log10|log10f|log10l|logb|logbf|logbl ( %num% )")) {
-            // Simplify: log2[f|l](1) = 0
+        } else if (Token::Match(tok, "log2|log2f|log2l|log|logf|logl|log10|log10f|log10l|logb|logbf|logbl|acosh|acoshf|acoshl ( %num% )")) {
+            // Simplify: log2[f|l](1) = 0 , log10[f|l](1) = 0
+            //           log[f|l](1) = 0 , logb10[f|l](1) = 0
+            //           acosh[f|l](1) = 0
+            // TODO: acos[f|l](1) = 0
             // get number string
             const std::string parameter(tok->tokAt(2)->str());
             // is parameter 1 ?
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index b4d9e0bde..7a66cfc89 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -514,6 +514,7 @@ private:
         TEST_CASE(simplifyMathFunctions_isgreater);
         TEST_CASE(simplifyMathFunctions_fmin);
         TEST_CASE(simplifyMathFunctions_fmax);
+        TEST_CASE(simplifyMathFunctions_acosh);
 
         TEST_CASE(simplifyMathExpressions); //ticket #1620
 
@@ -8343,6 +8344,39 @@ private:
         ASSERT_EQUALS(false, Tokenizer::isTwoNumber("garbage"));
     }
 
+    void simplifyMathFunctions_acosh() {
+        // verify acosh(), acoshf(), acoshl() - simplifcation
+        const char code_acosh[] ="void f(int x) {\n"
+                                 " std::cout << acosh(x);\n" // do not simplify
+                                 " std::cout << acosh(1L);\n" // simplify to 0
+                                 "}";
+        const char expected_acosh[] = "void f ( int x ) {\n"
+                                      "std :: cout << acosh ( x ) ;\n"
+                                      "std :: cout << 0 ;\n"
+                                      "}";
+        ASSERT_EQUALS(expected_acosh, tokenizeAndStringify(code_acosh));
+
+        const char code_acoshf[] ="void f(float x) {\n"
+                                  " std::cout << acoshf(x);\n" // do not simplify
+                                  " std::cout << acoshf(1.0f);\n" // simplify to 0
+                                  "}";
+        const char expected_acoshf[] = "void f ( float x ) {\n"
+                                       "std :: cout << acoshf ( x ) ;\n"
+                                       "std :: cout << 0 ;\n"
+                                       "}";
+        ASSERT_EQUALS(expected_acoshf, tokenizeAndStringify(code_acoshf));
+
+        const char code_acoshl[] ="void f(long double x) {\n"
+                                  " std::cout << acoshl(x);\n" // do not simplify
+                                  " std::cout << acoshl(1.0d);\n" // simplify to 0
+                                  "}";
+        const char expected_acoshl[] = "void f ( long double x ) {\n"
+                                       "std :: cout << acoshl ( x ) ;\n"
+                                       "std :: cout << 0 ;\n"
+                                       "}";
+        ASSERT_EQUALS(expected_acoshl, tokenizeAndStringify(code_acoshl));
+    }
+
     void simplifyMathFunctions_sqrt() {
         // verify sqrt(), sqrtf(), sqrtl() - simplifcation
         const char code_sqrt[] ="void f(int x) {\n"