diff --git a/lib/vsnprintf.c b/lib/vsnprintf.c
index 16d449cf..bc54f949 100644
--- a/lib/vsnprintf.c
+++ b/lib/vsnprintf.c
@@ -23,17 +23,15 @@ int vsnprintf(char *str, size_t size, const char *format, va_list ap)
     int rv, bytes;
 
     if (size > BUFFER_SIZE) {
-        nasm_malloc_error(ERR_PANIC|ERR_NOFILE,
-                          "snprintf: size (%d) > BUFFER_SIZE (%d)",
-                          size, BUFFER_SIZE);
+        nasm_error(ERR_PANIC|ERR_NOFILE,
+                   "vsnprintf: size (%d) > BUFFER_SIZE (%d)",
+                   size, BUFFER_SIZE);
         size = BUFFER_SIZE;
     }
 
     rv = vsprintf(snprintf_buffer, format, ap);
-    if (rv >= BUFFER_SIZE) {
-        nasm_malloc_error(ERR_PANIC|ERR_NOFILE,
-                          "snprintf buffer overflow");
-    }
+    if (rv >= BUFFER_SIZE)
+        nasm_error(ERR_PANIC|ERR_NOFILE, "vsnprintf buffer overflow");
 
     if (size > 0) {
         if ((size_t)rv < size-1)