diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 0177265d2..689228f08 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -3217,7 +3217,7 @@ bool Tokenizer::simplifySizeof()
             tok->deleteThis();
             tok->deleteNext();
             std::ostringstream sz;
-            sz << ((isC()) ? 4 : 1) ; // #7490 sizeof('a') should be 4 in C mode
+            sz << ((isC()) ? _settings->sizeof_int : 1) ; // #7490 sizeof('a') should be sizeof(int) in C mode
             tok->str(sz.str());
             ret = true;
             continue;
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index 7ceecfaf2..6b725b99e 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -23,7 +23,7 @@
 #include "path.h"
 #include "preprocessor.h" // usually tests here should not use preprocessor...
 #include <cstring>
-
+#include <sstream>
 
 class TestTokenizer : public TestFixture {
 public:
@@ -5878,7 +5878,9 @@ private:
     }
 
     void sizeOfCharLiteral() { // #7490 sizeof('a') should be 4 in C mode
-        ASSERT_EQUALS("unsigned long a ; a = 4 ;",
+        std::stringstream expected;
+        expected << "unsigned long a ; a = " << settings1.sizeof_int << " ;";
+        ASSERT_EQUALS(expected.str(),
                       tokenizeAndStringify("unsigned long a = sizeof('x');", true, true, Settings::Native, "test.c", false));
         ASSERT_EQUALS("unsigned long a ; a = 1 ;",
                       tokenizeAndStringify("unsigned long a = sizeof('x');", true, true, Settings::Native, "test.cpp", true));