diff --git a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/TargetingParams.java b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/TargetingParams.java
index 2b6c24dcd..81e6e3855 100644
--- a/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/TargetingParams.java
+++ b/PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/TargetingParams.java
@@ -287,7 +287,10 @@ public static Set<String> getUserKeywordsSet() {
      * be used to include “escaped” quotation marks.
      *
      * @param data Custom data to be passed
+     *
+     * @deprecated this is exchange-specific information
      */
+    @Deprecated
     public static void setUserCustomData(@Nullable String data) {
         userCustomData = data;
     }