diff --git a/src/sync.cpp b/src/sync.cpp
--- a/src/sync.cpp
+++ b/src/sync.cpp
@@ -47,8 +47,7 @@
 
     std::string ToString() const {
         return strprintf("%s %s:%s%s (in thread %s)", mutexName, sourceFile,
-                         itostr(sourceLine), (fTry ? " (TRY)" : ""),
-                         m_thread_name);
+                         sourceLine, (fTry ? " (TRY)" : ""), m_thread_name);
     }
 
     std::string Name() const { return mutexName; }
diff --git a/src/test/fuzz/integer.cpp b/src/test/fuzz/integer.cpp
--- a/src/test/fuzz/integer.cpp
+++ b/src/test/fuzz/integer.cpp
@@ -95,7 +95,6 @@
     (void)IsDigit(ch);
     (void)IsSpace(ch);
     (void)IsSwitchChar(ch);
-    (void)itostr(i32);
     (void)memusage::DynamicUsage(ch);
     (void)memusage::DynamicUsage(i16);
     (void)memusage::DynamicUsage(i32);
diff --git a/src/test/fuzz/locale.cpp b/src/test/fuzz/locale.cpp
--- a/src/test/fuzz/locale.cpp
+++ b/src/test/fuzz/locale.cpp
@@ -808,7 +808,6 @@
     const std::string i64tostr_without_locale = i64tostr(random_int64);
     const int32_t random_int32 =
         fuzzed_data_provider.ConsumeIntegral<int32_t>();
-    const std::string itostr_without_locale = itostr(random_int32);
     const std::string strprintf_int_without_locale =
         strprintf("%d", random_int64);
     const double random_double =
@@ -841,8 +840,6 @@
     assert(atoi_without_locale == atoi_with_locale);
     const std::string i64tostr_with_locale = i64tostr(random_int64);
     assert(i64tostr_without_locale == i64tostr_with_locale);
-    const std::string itostr_with_locale = itostr(random_int32);
-    assert(itostr_without_locale == itostr_with_locale);
     const std::string strprintf_int_with_locale = strprintf("%d", random_int64);
     assert(strprintf_int_without_locale == strprintf_int_with_locale);
     const std::string strprintf_double_with_locale =
diff --git a/src/util/strencodings.h b/src/util/strencodings.h
--- a/src/util/strencodings.h
+++ b/src/util/strencodings.h
@@ -63,7 +63,6 @@
 
 void SplitHostPort(std::string in, int &portOut, std::string &hostOut);
 std::string i64tostr(int64_t n);
-std::string itostr(int n);
 int64_t atoi64(const char *psz);
 int64_t atoi64(const std::string &str);
 int atoi(const std::string &str);
diff --git a/src/util/strencodings.cpp b/src/util/strencodings.cpp
--- a/src/util/strencodings.cpp
+++ b/src/util/strencodings.cpp
@@ -455,10 +455,6 @@
     return strprintf("%d", n);
 }
 
-std::string itostr(int n) {
-    return strprintf("%d", n);
-}
-
 int64_t atoi64(const char *psz) {
 #ifdef _MSC_VER
     return _atoi64(psz);