diff --git a/Formula/p0f.rb b/Formula/p0f.rb
index 06cff4c2f6..d23a9eb935 100644
--- a/Formula/p0f.rb
+++ b/Formula/p0f.rb
@@ -6,7 +6,7 @@ class P0f < Formula
   sha1 'ae2c4fbcddf2a5ced33abd81992405b93207e7c8'
 
   def install
-    inreplace 'config.h', 'p0f.fp', "#{etc}/p0f/p0f.fp"
+    inreplace "config.h", "p0f.fp", "#{etc}/p0f/p0f.fp"
     system './build.sh'
     sbin.install 'p0f'
     (etc + 'p0f').install 'p0f.fp'
@@ -19,6 +19,6 @@ class P0f < Formula
            'RAAAAAIAAABFAABAbvpAAEAGAAB/AAABfwAAAcv8Iyjt2/Pg' \
            'AAAAALAC///+NAAAAgQ/2AEDAwQBAQgKCyrc9wAAAAAEAgAA'
     (testpath / 'test.pcap').write(Base64.decode64(pcap))
-    system "#{sbin}/p0f", '-r', 'test.pcap'
+    system "#{sbin}/p0f", "-r", "test.pcap"
   end
 end