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-rw-r--r--src/libstore/build.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 54c48cf91f..ab1011981c 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -660,7 +660,7 @@ void DerivationGoal::haveStoreExpr()
          i != invalidOutputs.end(); ++i)
         /* Don't bother creating a substitution goal if there are no
            substitutes. */
-        if (store->querySubstitutes(*i).size() > 0)
+        if (store->hasSubstitutes(*i))
             addWaitee(worker.makeSubstitutionGoal(*i));
 
     if (waitees.empty()) /* to prevent hang (no wake-up event) */