diff --git a/include/haproxy/tinfo-t.h b/include/haproxy/tinfo-t.h
index f061a6e79..aacf3f10e 100644
--- a/include/haproxy/tinfo-t.h
+++ b/include/haproxy/tinfo-t.h
@@ -84,6 +84,7 @@ enum thread_exec_ctx_type {
 	TH_EX_CTX_SMPF,                     /* directly registered sample fetch function, using .smpf_kwl */
 	TH_EX_CTX_CONV,                     /* directly registered converter function, using .conv_kwl */
 	TH_EX_CTX_FUNC,                     /* hopefully recognizable function/callback, using .pointer */
+	TH_EX_CTX_ACTION,                   /* directly registered action function, using .action_kwl */
 };
 
 struct thread_exec_ctx {
@@ -95,6 +96,7 @@ struct thread_exec_ctx {
 		const struct ha_caller *ha_caller;  /* used with TH_EX_CTX_CALLER */
 		const struct sample_fetch_kw_list *smpf_kwl; /* used with TH_EX_CTX_SMPF */
 		const struct sample_conv_kw_list *conv_kwl;  /* used with TH_EX_CTX_CONV */
+		const struct action_kw_list *action_kwl;  /* used with TH_EX_CTX_ACTION */
 	};
 };
 
diff --git a/src/action.c b/src/action.c
index 9c5153b1c..a695202b7 100644
--- a/src/action.c
+++ b/src/action.c
@@ -400,6 +400,9 @@ void act_add_list(struct list *head, struct action_kw_list *kw_list)
 		if (caller_initcall) {
 			kw_list->kw[i].exec_ctx.type = TH_EX_CTX_INITCALL;
 			kw_list->kw[i].exec_ctx.initcall = caller_initcall;
+		} else {
+			kw_list->kw[i].exec_ctx.type = TH_EX_CTX_ACTION;
+			kw_list->kw[i].exec_ctx.action_kwl = kw_list;
 		}
 	}
 	LIST_APPEND(head, &kw_list->list);
diff --git a/src/tools.c b/src/tools.c
index 58fa78013..eaf655722 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -7539,6 +7539,9 @@ void chunk_append_thread_ctx(struct buffer *output, const struct thread_exec_ctx
 		resolve_sym_name(output, "func '", ctx->pointer);
 		chunk_appendf(output,"'");
 		break;
+	case TH_EX_CTX_ACTION:
+		chunk_appendf(output,"act kwl starting with '%s'", ctx->action_kwl->kw[0].kw);
+		break;
 	default:
 		chunk_appendf(output,"other ctx %p", ctx->pointer);
 		break;