diff --git a/src/detect-engine-analyzer.c b/src/detect-engine-analyzer.c
index a37afabb0f00..e2da86b8a55a 100644
--- a/src/detect-engine-analyzer.c
+++ b/src/detect-engine-analyzer.c
@@ -45,6 +45,7 @@
 #include "util-time.h"
 #include "util-validate.h"
 #include "util-conf.h"
+#include "detect-tcp-ack.h"
 
 static int rule_warnings_only = 0;
 
@@ -861,6 +862,14 @@ static void DumpMatches(RuleAnalyzer *ctx, JsonBuilder *js, const SigMatchData *
                 jb_close(js);
                 break;
             }
+            case DETECT_ACK: {
+                const DetectAckData *cd = (const DetectAckData *)smd->ctx;
+
+                jb_open_object(js, "ack");
+                jb_set_uint(js, "ack", cd->ack);
+                jb_close(js);
+                break;
+            }
         }
         jb_close(js);