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-rw-r--r--src/libstore/local-store.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index fc48c0405650..9bd03178ed9b 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -358,7 +358,8 @@ LocalStore::~LocalStore()
             i->second.to.close();
             i->second.from.close();
             i->second.error.close();
-            i->second.pid.wait(true);
+            if (i->second.pid != -1)
+                i->second.pid.wait(true);
         }
     } catch (...) {
         ignoreException();