diff --git a/src/base58.cpp b/src/base58.cpp
--- a/src/base58.cpp
+++ b/src/base58.cpp
@@ -7,6 +7,7 @@
 #include "hash.h"
 #include "script/script.h"
 #include "uint256.h"
+#include "utilstrencodings.h"
 
 #include <boost/variant/apply_visitor.hpp>
 #include <boost/variant/static_visitor.hpp>
@@ -22,7 +23,7 @@
 
 bool DecodeBase58(const char *psz, std::vector<uint8_t> &vch) {
     // Skip leading spaces.
-    while (*psz && isspace(*psz)) {
+    while (*psz && IsSpace(*psz)) {
         psz++;
     }
     // Skip and count leading '1's.
@@ -37,7 +38,7 @@
     int size = strlen(psz) * 733 / 1000 + 1;
     std::vector<uint8_t> b256(size);
     // Process the characters.
-    while (*psz && !isspace(*psz)) {
+    while (*psz && !IsSpace(*psz)) {
         // Decode base58 character
         const char *ch = strchr(pszBase58, *psz);
         if (ch == nullptr) {
@@ -57,7 +58,7 @@
         psz++;
     }
     // Skip trailing spaces.
-    while (isspace(*psz)) {
+    while (IsSpace(*psz)) {
         psz++;
     }
     if (*psz != 0) {
diff --git a/src/uint256.cpp b/src/uint256.cpp
--- a/src/uint256.cpp
+++ b/src/uint256.cpp
@@ -25,7 +25,7 @@
     memset(data, 0, sizeof(data));
 
     // skip leading spaces
-    while (isspace(*psz)) {
+    while (IsSpace(*psz)) {
         psz++;
     }
 
diff --git a/src/utilmoneystr.cpp b/src/utilmoneystr.cpp
--- a/src/utilmoneystr.cpp
+++ b/src/utilmoneystr.cpp
@@ -39,7 +39,7 @@
     std::string strWhole;
     Amount nUnits = Amount::zero();
     const char *p = pszIn;
-    while (isspace(*p)) {
+    while (IsSpace(*p)) {
         p++;
     }
     for (; *p; p++) {
@@ -52,7 +52,7 @@
             }
             break;
         }
-        if (isspace(*p)) {
+        if (IsSpace(*p)) {
             break;
         }
         if (!isdigit(*p)) {
@@ -61,7 +61,7 @@
         strWhole.insert(strWhole.end(), *p);
     }
     for (; *p; p++) {
-        if (!isspace(*p)) {
+        if (!IsSpace(*p)) {
             return false;
         }
     }
diff --git a/src/utilstrencodings.h b/src/utilstrencodings.h
--- a/src/utilstrencodings.h
+++ b/src/utilstrencodings.h
@@ -67,6 +67,23 @@
 int64_t atoi64(const std::string &str);
 int atoi(const std::string &str);
 
+/**
+ * Tests if the given character is a whitespace character. The whitespace
+ * characters are: space, form-feed ('\f'), newline ('\n'), carriage return
+ * ('\r'), horizontal tab ('\t'), and vertical tab ('\v').
+ *
+ * This function is locale independent. Under the C locale this function gives
+ * the same result as std::isspace.
+ *
+ * @param[in] c     character to test
+ * @return          true if the argument is a whitespace character; otherwise
+ * false
+ */
+constexpr inline bool IsSpace(char c) noexcept {
+    return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' ||
+           c == '\v';
+}
+
 /**
  * Convert string to signed 32-bit integer with strict parse error feedback.
  * @returns true if the entire string could be parsed as valid integer, false if
diff --git a/src/utilstrencodings.cpp b/src/utilstrencodings.cpp
--- a/src/utilstrencodings.cpp
+++ b/src/utilstrencodings.cpp
@@ -84,7 +84,7 @@
     // convert hex dump to vector
     std::vector<uint8_t> vch;
     while (true) {
-        while (isspace(*psz)) {
+        while (IsSpace(*psz)) {
             psz++;
         }
         signed char c = HexDigit(*psz++);
@@ -471,7 +471,7 @@
         return false;
     }
     // No padding allowed
-    if (str.size() >= 1 && (isspace(str[0]) || isspace(str[str.size() - 1]))) {
+    if (str.size() >= 1 && (IsSpace(str[0]) || IsSpace(str[str.size() - 1]))) {
         return false;
     }
     // No embedded NUL characters allowed
diff --git a/test/lint/lint-locale-dependence.sh b/test/lint/lint-locale-dependence.sh
--- a/test/lint/lint-locale-dependence.sh
+++ b/test/lint/lint-locale-dependence.sh
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
 KNOWN_VIOLATIONS=(
-    "src/base58.cpp:.*isspace"
     "src/bitcoin-tx.cpp.*stoul"
     "src/bitcoin-tx.cpp.*trim_right"
     "src/bitcoin-tx.cpp:.*atoi"
@@ -17,14 +16,11 @@
     "src/test/dbwrapper_tests.cpp:.*snprintf"
     "src/test/getarg_tests.cpp.*split"
     "src/torcontrol.cpp:.*atoi"
-    "src/uint256.cpp:.*isspace"
     "src/uint256.cpp:.*tolower"
     "src/util.cpp:.*atoi"
     "src/util.cpp:.*tolower"
     "src/utilmoneystr.cpp:.*isdigit"
-    "src/utilmoneystr.cpp:.*isspace"
     "src/utilstrencodings.cpp:.*atoi"
-    "src/utilstrencodings.cpp:.*isspace"
     # Append the opening parenthesis to avoid shadowing strtoll with grep
     "src/utilstrencodings.cpp:.*strtol\("
     "src/utilstrencodings.cpp:.*strtoll"