diff --git a/hotspot/src/share/vm/gc_interface/gcCause.cpp b/hotspot/src/share/vm/gc_interface/gcCause.cpp
index a364214bdd2..3e0b9dd750d 100644
--- a/hotspot/src/share/vm/gc_interface/gcCause.cpp
+++ b/hotspot/src/share/vm/gc_interface/gcCause.cpp
@@ -103,6 +103,9 @@ const char* GCCause::to_string(GCCause::Cause cause) {
     case _last_ditch_collection:
       return "Last ditch collection";
 
+    case _dcmd_gc_run:
+      return "Diagnostic Command";
+
     case _last_gc_cause:
       return "ILLEGAL VALUE - last gc cause - ILLEGAL VALUE";
 
diff --git a/hotspot/src/share/vm/gc_interface/gcCause.hpp b/hotspot/src/share/vm/gc_interface/gcCause.hpp
index cb304294639..df4a212213f 100644
--- a/hotspot/src/share/vm/gc_interface/gcCause.hpp
+++ b/hotspot/src/share/vm/gc_interface/gcCause.hpp
@@ -74,6 +74,9 @@ class GCCause : public AllStatic {
     _g1_humongous_allocation,
 
     _last_ditch_collection,
+
+    _dcmd_gc_run,
+
     _last_gc_cause
   };
 
diff --git a/hotspot/src/share/vm/services/diagnosticCommand.cpp b/hotspot/src/share/vm/services/diagnosticCommand.cpp
index a1853ea2464..d5abd05afa6 100644
--- a/hotspot/src/share/vm/services/diagnosticCommand.cpp
+++ b/hotspot/src/share/vm/services/diagnosticCommand.cpp
@@ -267,7 +267,7 @@ int VMUptimeDCmd::num_arguments() {
 
 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
   if (!DisableExplicitGC) {
-    Universe::heap()->collect(GCCause::_java_lang_system_gc);
+    Universe::heap()->collect(GCCause::_dcmd_gc_run);
   } else {
     output()->print_cr("Explicit GC is disabled, no GC has been performed.");
   }