diff --git a/Formula/z/zeek.rb b/Formula/z/zeek.rb
index 4c0517d45f846..cd87aa3c27557 100644
--- a/Formula/z/zeek.rb
+++ b/Formula/z/zeek.rb
@@ -36,8 +36,6 @@ class Zeek < Formula
   uses_from_macos "libxcrypt"
   uses_from_macos "zlib"
 
-  fails_with gcc: "5"
-
   def install
     # Remove SDK paths from zeek-config. This breaks usage with other SDKs.
     # https://github.com/Homebrew/homebrew-core/pull/74932
@@ -70,10 +68,10 @@ def install
     assert_match "version #{version}", shell_output("#{bin}/zeek --version")
     assert_match "ARP packet analyzer", shell_output("#{bin}/zeek --print-plugins")
     system bin/"zeek", "-C", "-r", test_fixtures("test.pcap")
-    assert_predicate testpath/"conn.log", :exist?
-    refute_predicate testpath/"conn.log", :empty?
-    assert_predicate testpath/"http.log", :exist?
-    refute_predicate testpath/"http.log", :empty?
+    assert_path_exists testpath/"conn.log"
+    refute_empty (testpath/"conn.log").read
+    assert_path_exists testpath/"http.log"
+    refute_empty (testpath/"http.log").read
     # For bottling MacOS SDK paths must not be part of the public include directories, see zeek/zeek#1468.
     refute_includes shell_output("#{bin}/zeek-config --include_dir").chomp, "MacOSX"
   end