diff --git a/lib/astutils.cpp b/lib/astutils.cpp
index 6878db264..d32701112 100644
--- a/lib/astutils.cpp
+++ b/lib/astutils.cpp
@@ -203,6 +203,11 @@ bool astIsUnknownSignChar(const Token *tok)
     return astIsCharWithSign(tok, ValueType::Sign::UNKNOWN_SIGN);
 }
 
+bool astIsGenericChar(const Token* tok)
+{
+    return tok && tok->valueType() && (tok->valueType()->type == ValueType::Type::CHAR || tok->valueType()->type == ValueType::Type::WCHAR_T);
+}
+
 bool astIsIntegral(const Token *tok, bool unknown)
 {
     const ValueType *vt = tok ? tok->valueType() : nullptr;
diff --git a/lib/astutils.h b/lib/astutils.h
index 452c9092e..87102f9be 100644
--- a/lib/astutils.h
+++ b/lib/astutils.h
@@ -67,6 +67,8 @@ bool astHasVar(const Token * tok, nonneg int varid);
 bool astIsSignedChar(const Token *tok);
 /** Is expression a 'char' if no promotion is used? */
 bool astIsUnknownSignChar(const Token *tok);
+/** Is expression a char according to valueType? */
+bool astIsGenericChar(const Token* tok);
 /** Is expression of integral type? */
 bool astIsIntegral(const Token *tok, bool unknown);
 bool astIsUnsigned(const Token* tok);
diff --git a/lib/valueflow.cpp b/lib/valueflow.cpp
index 585c7a6ea..90668cd09 100644
--- a/lib/valueflow.cpp
+++ b/lib/valueflow.cpp
@@ -7045,8 +7045,9 @@ static std::vector<ValueFlow::Value> getInitListSize(const Token* tok,
                                                      bool known = true)
 {
     std::vector<const Token*> args = getArguments(tok);
-    // Strings don't use an init list
     if (!args.empty() && container->stdStringLike) {
+        if (astIsGenericChar(args[0])) // init list of chars
+            return { makeContainerSizeValue(args.size(), known) };
         if (astIsIntegral(args[0], false)) {
             if (args.size() > 1)
                 return {makeContainerSizeValue(args[0], known)};
diff --git a/test/testvalueflow.cpp b/test/testvalueflow.cpp
index 61c9c71c8..12366df42 100644
--- a/test/testvalueflow.cpp
+++ b/test/testvalueflow.cpp
@@ -5126,6 +5126,12 @@ private:
                "}";
         ASSERT_EQUALS("", isKnownContainerSizeValue(tokenValues(code, "s . size"), 3));
 
+        code = "void f() {\n"
+               "  std::string s = { 'a', 'b', 'c' };\n" // size of s is 3
+               "  s.size();\n"
+               "}";
+        ASSERT_EQUALS("", isKnownContainerSizeValue(tokenValues(code, "s . size"), 3));
+
         code = "void f() {\n"
                "  std::string s=\"abc\";\n" // size of s is 3
                "  s += unknown;\n"