3 files changed, 4 insertions, 16 deletions
diff --git a/src/nix-store/dotgraph.hh b/src/nix-store/dotgraph.hh
index 2318e2fde48d..68410d84156d 100644
--- a/src/nix-store/dotgraph.hh
+++ b/src/nix-store/dotgraph.hh
@@ -1,5 +1,4 @@
-#ifndef __DOTGRAPH_H
-#define __DOTGRAPH_H
+#pragma once
 
 #include "types.hh"
 
@@ -8,5 +7,3 @@ namespace nix {
 void printDotGraph(const PathSet & roots);
 
 }
-
-#endif /* !__DOTGRAPH_H */
diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index 47c76693f1dc..941301d2e7a1 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -746,18 +746,12 @@ static void showOptimiseStats(OptimiseStats & stats)
    files with the same contents. */
 static void opOptimise(Strings opFlags, Strings opArgs)
 {
-    if (!opArgs.empty())
+    if (!opArgs.empty() || !opFlags.empty())
         throw UsageError("no arguments expected");
 
-    bool dryRun = false;
-
-    foreach (Strings::iterator, i, opFlags)
-        if (*i == "--dry-run") dryRun = true;
-        else throw UsageError(format("unknown flag `%1%'") % *i);
-
     OptimiseStats stats;
     try {
-        ensureLocalStore().optimiseStore(dryRun, stats);
+        ensureLocalStore().optimiseStore(stats);
     } catch (...) {
         showOptimiseStats(stats);
         throw;
diff --git a/src/nix-store/xmlgraph.hh b/src/nix-store/xmlgraph.hh
index 2f9908c43665..c2216c5a4627 100644
--- a/src/nix-store/xmlgraph.hh
+++ b/src/nix-store/xmlgraph.hh
@@ -1,5 +1,4 @@
-#ifndef __XMLGRAPH_H
-#define __XMLGRAPH_H
+#pragma once
 
 #include "types.hh"
 
@@ -8,5 +7,3 @@ namespace nix {
 void printXmlGraph(const PathSet & roots);
 
 }
-
-#endif /* !__XMLGRAPH_H */