diff --git a/src/test/libicalvcard/vcard_test.c b/src/test/libicalvcard/vcard_test.c
index 40c0a4ebf..ab18f875e 100644
--- a/src/test/libicalvcard/vcard_test.c
+++ b/src/test/libicalvcard/vcard_test.c
@@ -53,8 +53,12 @@ int main(int argc, const char **argv)
     fstat(fd, &sbuf);
     data = malloc(sbuf.st_size+1);
 
-    read(fd, data, sbuf.st_size);
-    data[sbuf.st_size] = '\0';
+    int r = read(fd, data, sbuf.st_size);
+    if (r < 0) {
+        fprintf(stderr, "Failed to read vCard\n");
+        return -1;
+    }
+    data[r+1] = '\0';
 
     vcardcomponent *card = vcardparser_parse_string(data);
     free(data);