diff --git a/programs/develop/ktcc/trunk/libc.obj/source/stdio/fread.c b/programs/develop/ktcc/trunk/libc.obj/source/stdio/fread.c
index 35eff033fb..6010ad123e 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/stdio/fread.c
+++ b/programs/develop/ktcc/trunk/libc.obj/source/stdio/fread.c
@@ -12,6 +12,12 @@ size_t fread(void *restrict ptr, size_t size, size_t nmemb, FILE *restrict strea
 		return 0;
 	}
 	
+	if(size<=0 || nmemb<=0){
+		errno = EINVAL;
+		stream->error=errno;
+		return 0;
+	}
+	
 	if(stream==stdin){
 		con_init();
 		con_gets((char*)ptr, bytes_count+1);
@@ -25,14 +31,17 @@ size_t fread(void *restrict ptr, size_t size, size_t nmemb, FILE *restrict strea
 				//debug_printf("Ungetc: %x\n", ((char*) ptr)[0]);
 			}
 			unsigned status = _ksys_file_read_file(stream->name, stream->position, bytes_count, ptr , &bytes_read);
-			if (status) {
-            	errno = EIO;
-            	stream->error = errno;
-				return 0;
-        	}else {
-    			stream->position+=bytes_read;
+			if (status != KSYS_FS_ERR_SUCCESS) {
+				if(status == KSYS_FS_ERR_EOF){
+					stream->eof=1;
+				}else{
+					errno = EIO;
+					stream->error = errno;
+					return 0;
+				}
 			}
+			stream->position+=bytes_read;
 		}
 	}
-	return bytes_read;
+	return bytes_read/size;
 }
diff --git a/programs/develop/ktcc/trunk/libc.obj/source/stdio/fwrite.c b/programs/develop/ktcc/trunk/libc.obj/source/stdio/fwrite.c
index 0e807aacda..c2e095223e 100644
--- a/programs/develop/ktcc/trunk/libc.obj/source/stdio/fwrite.c
+++ b/programs/develop/ktcc/trunk/libc.obj/source/stdio/fwrite.c
@@ -12,28 +12,34 @@ size_t fwrite(const void *restrict ptr, size_t size, size_t nmemb, FILE *restric
 		return 0;
 	}
 	
+	if(size<=0 || nmemb<=0){
+		errno = EINVAL;
+		stream->error=errno;
+		return 0;
+	}
+	
 	if(stream==stdout){
 		con_init();
 		con_write_string((char*)ptr, bytes_count);
 		return nmemb;
 	}
-	else if(stream==stderr){
+	
+	if(stream==stderr){
 		for (size_t i = 0; i < bytes_count; i++) {
 			char c = *(char*)(ptr+i);
 			_ksys_debug_putc(c);
 		}
+		return nmemb;
 	}
-	else{
-		if(stream->mode != _FILEMODE_R){
-			unsigned status = _ksys_file_write_file(stream->name, stream->position, bytes_count, ptr, &bytes_written);
-			if (status != KSYS_FS_ERR_SUCCESS) {
-            	errno = EIO;
-            	stream->error = errno;
-				return 0;
-        	}else {
-    			stream->position+=bytes_written;
-			}
+	
+	if(stream->mode != _FILEMODE_R){
+		unsigned status = _ksys_file_write_file(stream->name, stream->position, bytes_count, ptr, &bytes_written);
+		if (status != KSYS_FS_ERR_SUCCESS) {
+			errno = EIO;
+			stream->error = errno;
+			return 0;
 		}
+		stream->position+=bytes_written;
 	}
-	return bytes_written;
-}
\ No newline at end of file
+	return bytes_written/size;
+}