diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 26be867a0..b296f2165 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -2151,6 +2151,8 @@ void Tokenizer::concatenateNegativeNumber()
         if (Token::Match(tok, "?|:|,|(|[|{|=|return|case|sizeof|%op% - %num%")) {
             tok->deleteNext();
             tok->next()->str("-" + tok->next()->str());
+        } else if (Token::Match(tok, "?|:|,|(|[|{|=|return|case|sizeof|%op% +")) {
+            tok->deleteNext();
         }
     }
 }
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index ad21596b8..3f6eca46e 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -71,7 +71,7 @@ private:
 
         TEST_CASE(foreach);     // #3690
 
-        TEST_CASE(minus);
+        TEST_CASE(concatenateNegativeNumber);
 
         TEST_CASE(longtok);
 
@@ -810,12 +810,14 @@ private:
         ASSERT_EQUALS("void f ( ) { for ( char c in MyString ) { Console :: Write ( c ) ; } }" ,tokenizeAndStringify(code.c_str()));
     }
 
-    void minus() {
+    void concatenateNegativeNumber() {
         ASSERT_EQUALS("i = -12", tokenizeAndStringify("i = -12"));
         ASSERT_EQUALS("1 - 2", tokenizeAndStringify("1-2"));
         ASSERT_EQUALS("foo ( -1 ) - 2", tokenizeAndStringify("foo(-1)-2"));
         ASSERT_EQUALS("int f ( ) { return -2 ; }", tokenizeAndStringify("int f(){return -2;}"));
         ASSERT_EQUALS("int x [ 2 ] = { -2 , 1 }", tokenizeAndStringify("int x[2] = {-2,1}"));
+
+        ASSERT_EQUALS("f ( 123 )", tokenizeAndStringify("f(+123)"));
     }