diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 4c0ef597b..44258415d 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -6525,10 +6525,8 @@ bool Tokenizer::simplifyKnownVariablesGetData(unsigned int varid, Token **_tok2,
                 valueIsPointer = true;
         }
 
-        // float value should contain a "."
-        else if (tok2->tokAt(2)->isNumber() &&
-                 floatvar &&
-                 value.find(".") == std::string::npos) {
+        // Add a '.0' to a decimal value and therefore convert it to an floating point number.
+        else if (MathLib::isDec(tok2->tokAt(2)->str()) && floatvar) {
             value += ".0";
         }
 
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index cd4bb4dd5..f95460d9c 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -3179,6 +3179,19 @@ private:
                              "    return a;"
                              "}";
         ASSERT_EQUALS("double f ( ) { return 0.0 ; }", tokenizeAndStringify(code2,true));
+
+        // Ticket #5485
+        const char code3[] = "void f() {"
+                             "    double a = 1e+007;\n"
+                             "    std::cout << a;\n"
+                             "}";
+        ASSERT_EQUALS("void f ( ) {\nstd :: cout << 1e+007 ;\n}", tokenizeAndStringify(code3,true));
+
+        const char code4[] = "void f() {"
+                             "    double a = 1;\n"
+                             "    std::cout << a;\n"
+                             "}";
+        ASSERT_EQUALS("void f ( ) {\nstd :: cout << 1.0 ;\n}", tokenizeAndStringify(code4,true));
     }
 
     void simplifyKnownVariablesFunctionCalls() {