diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index d44c679..4c6139c 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -298,7 +298,7 @@
                     }
                     else if (entry->entry.len != ret - sizeof(struct logger_entry)) {
                         fprintf(stderr, "read: unexpected length. Expected %d, got %d\n",
-                                entry->entry.len, ret - sizeof(struct logger_entry));
+                                entry->entry.len, ret - (int) sizeof(struct logger_entry));
                         exit(EXIT_FAILURE);
                     }