diff --git a/src/compiler/SymbolTable.cpp b/src/compiler/SymbolTable.cpp
index edbea99..01ec0db 100644
--- a/src/compiler/SymbolTable.cpp
+++ b/src/compiler/SymbolTable.cpp
@@ -56,7 +56,7 @@
     mangledName += static_cast<char>('0' + getNominalSize());
     if (isArray()) {
         char buf[20];
-        sprintf(buf, "%d", arraySize);
+        snprintf(buf, sizeof(buf), "%d", arraySize);
         mangledName += '[';
         mangledName += buf;
         mangledName += ']';