diff --git a/util.cpp b/util.cpp
index 8518e2797..8a2f9d525 100644
--- a/util.cpp
+++ b/util.cpp
@@ -313,7 +313,12 @@ void ParseString(const string& str, char c, vector<string>& v)
 
 string FormatMoney(int64 n, bool fPlus)
 {
-    string str = strprintf("%.08f", double(n > 0 ? n : -n)/double(COIN));
+    // Note: not using straight sprintf here because we do NOT want
+    // localized number formatting.
+    int64 n_abs = (n > 0 ? n : -n);
+    int64 quotient = n_abs/COIN;
+    int64 remainder = n_abs%COIN;
+    string str = strprintf("%"PRI64d".%08"PRI64d, quotient, remainder);
 
     // Right-trim excess 0's before the decimal point:
     int nTrim = 0;