diff --git a/reactos/lib/sdk/crt/string/scanf.h b/reactos/lib/sdk/crt/string/scanf.h
index 4d904bdfd28..b27eb5626aa 100644
--- a/reactos/lib/sdk/crt/string/scanf.h
+++ b/reactos/lib/sdk/crt/string/scanf.h
@@ -131,8 +131,14 @@ _FUNCTION_ {
 	    /* read prefix (if any) */
 	    while (!prefix_finished) {
 		switch(*format) {
-		case 'h': h_prefix = 1; break;
-		case 'l': l_prefix = 1; break;
+		case 'h': h_prefix++; break;
+		case 'l':
+                    if(*(format+1) == 'l') {
+                        I64_prefix = 1;
+                        format++;
+                    }
+                    l_prefix = 1;
+                    break;
 		case 'w': w_prefix = 1; break;
 		case 'L': L_prefix = 1; break;
 		case 'I':
@@ -227,15 +233,15 @@ _FUNCTION_ {
 #define _SET_NUMBER_(type) *va_arg(ap, type*) = (type)(negative ? -cur : cur)
 			if (I64_prefix) _SET_NUMBER_(LONGLONG);
 			else if (l_prefix) _SET_NUMBER_(LONG);
-			else if (h_prefix) _SET_NUMBER_(short int);
+			else if (h_prefix == 1) _SET_NUMBER_(short int);
 			else _SET_NUMBER_(int);
 		    }
                 }
                 break;
-	    case 'e':
-	    case 'E':
-	    case 'f':
-	    case 'g':
+            case 'e':
+            case 'E':
+            case 'f':
+            case 'g':
             case 'G': { /* read a float */
                     long double cur = 0;
 		    int negative = 0;
@@ -527,6 +533,7 @@ _FUNCTION_ {
     if (nch!=_EOF_) {
 	_UNGETC_(nch, file);
     }
+
     TRACE("returning %d\n", rd);
     return rd;
 }