diff --git a/src/rt/profilegc.d b/src/rt/profilegc.d
index f750808892..5b197976cc 100644
--- a/src/rt/profilegc.d
+++ b/src/rt/profilegc.d
@@ -94,8 +94,16 @@ static ~this()
                 // Merge
                 foreach (name, entry; newCounts)
                 {
-                    globalNewCounts[name].count += entry.count;
-                    globalNewCounts[name].size += entry.size;
+                    auto ptr = name in globalNewCounts;
+                    if (ptr)
+                    {
+                        ptr.count += entry.count;
+                        ptr.size += entry.size;
+                    }
+                    else
+                    {
+                        globalNewCounts[name] = entry;
+                    }
                 }
             }
             else