diff --git a/src/js/git/commands.js b/src/js/git/commands.js
index 03b68cd0..e08122dd 100644
--- a/src/js/git/commands.js
+++ b/src/js/git/commands.js
@@ -208,6 +208,14 @@ var commandConfig = {
     }
   },
 
+  gc: {
+    displayName: 'gc',
+    regex: /^git +gc($|\s)/,
+    execute: function(engine, command) {
+      engine.pruneTree(false);
+    }
+  },
+
   pull: {
     regex: /^git +pull($|\s)/,
     options: [
diff --git a/src/js/git/index.js b/src/js/git/index.js
index b5970d2f..c624be11 100644
--- a/src/js/git/index.js
+++ b/src/js/git/index.js
@@ -1836,7 +1836,7 @@ GitEngine.prototype.pruneTreeAndPlay = function() {
     this.animationFactory.playRefreshAnimationSlow(this.gitVisuals);
 };
 
-GitEngine.prototype.pruneTree = function() {
+GitEngine.prototype.pruneTree = function(doPrintWarning = true) {
   var set = this.getUpstreamBranchSet();
   // don't prune commits that HEAD depends on
   var headSet = Graph.getUpstreamSet(this, 'HEAD');
@@ -1857,7 +1857,7 @@ GitEngine.prototype.pruneTree = function() {
     // the switch sync
     return;
   }
-  if (this.command) {
+  if (this.command && doPrintWarning) {
     this.command.addWarning(intl.str('hg-prune-tree'));
   }