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-rw-r--r--src/libstore/remote-store.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index bc9ef3d47c5e..af59d51106fc 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -414,7 +414,9 @@ Path RemoteStore::addToStore(const string & name, const Path & _srcPath,
     try {
         conn->to.written = 0;
         conn->to.warn = true;
+        connections->incCapacity();
         dumpPath(srcPath, conn->to, filter);
+        connections->decCapacity();
         conn->to.warn = false;
         conn->processStderr();
     } catch (SysError & e) {