diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 485d3ff77..fe51596a0 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -5178,7 +5178,7 @@ void Tokenizer::simplifyVarDecl(bool only_k_r_fpar)
         unsigned int typelen = 1;
 
         //check if variable is declared 'const' or 'static' or both
-        while (Token::Match(tok2, "const|static")) {
+        while (Token::Match(tok2, "const|static") || Token::Match(tok2, "%type% const|static")) {
             if (tok2->str() == "const")
                 isconst = true;
 
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 8bfa780be..f29978bdc 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -294,6 +294,7 @@ private:
         TEST_CASE(vardecl17);
         TEST_CASE(vardecl18);
         TEST_CASE(vardecl19);
+        TEST_CASE(vardecl20);  // #3700 - register const int H = 0;
         TEST_CASE(vardecl_stl_1);
         TEST_CASE(vardecl_stl_2);
         TEST_CASE(vardecl_template_1);
@@ -4788,6 +4789,18 @@ private:
         }
     }
 
+    void vardecl20() {
+        // #3700
+        const char code[] = "void a::b() const\n"
+                            "{\n"
+                            "    register const int X = 0;\n"
+                            "}\n";
+        ASSERT_EQUALS("void a :: b ( ) const\n"
+                      "{\n"
+                      "const int X = 0 ;\n"
+                      "}", tokenizeAndStringify(code));
+    }
+
     void volatile_variables() {
         const char code[] = "volatile int a=0;\n"
                             "volatile int b=0;\n"