diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index 81507e30c..3feb049e1 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -48,7 +48,7 @@ static bool astIsFloat(const Token *tok, bool unknown)
         if (!tok->variable())
             return unknown;
 
-        return Token::findmatch(tok->variable()->typeStartToken(), "float|double", tok->variable()->typeEndToken()->next(), 0);
+        return Token::findmatch(tok->variable()->typeStartToken(), "float|double", tok->variable()->typeEndToken()->next(), 0) != nullptr;
     }
 
     return unknown;
diff --git a/lib/token.cpp b/lib/token.cpp
index 51becb2fb..c943c6192 100644
--- a/lib/token.cpp
+++ b/lib/token.cpp
@@ -1264,7 +1264,7 @@ std::string Token::astStringVerbose(const unsigned int indent1, const unsigned i
 
 void Token::printValueFlow() const
 {
-    int line = -1;
+    unsigned int line = 0;
     std::cout << "\n\n##Value flow" << std::endl;
     for (const Token *tok = this; tok; tok = tok->next()) {
         if (tok->values.empty())