diff --git a/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/bundle/BundleRestService.java b/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/bundle/BundleRestService.java
index 270cc15fa53..dac374ced4a 100644
--- a/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/bundle/BundleRestService.java
+++ b/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/bundle/BundleRestService.java
@@ -110,16 +110,13 @@ public Promise<Bundle> get(
 		@PathVariable(value="bundleId", required = true) 
 		final String bundleId,
 
-		@Parameter(description = "The timestamp to use for historical ('as of') queries", deprecated = true)
-		final Long timestamp,
-		
 		@ParameterObject
 		final ResourceSelectors selectors) {
 		
-		return ResourceRequests.bundles().prepareGet(bundleId.contains(RevisionIndex.AT_CHAR) || timestamp == null ? Bundle.uri(bundleId) : Bundle.uri(bundleId).withTimestampPart(RevisionIndex.AT_CHAR + timestamp))
+		return ResourceRequests.bundles().prepareGet(Bundle.uri(bundleId))
 			.setExpand(selectors.getExpand())
 			.setFields(selectors.getField())
-			.buildAsync(timestamp)
+			.buildAsync()
 			.execute(getBus());
 	}
 	
diff --git a/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/codesystem/CodeSystemRestService.java b/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/codesystem/CodeSystemRestService.java
index c97940b0acd..9c7a7c142ce 100644
--- a/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/codesystem/CodeSystemRestService.java
+++ b/core/com.b2international.snowowl.core.rest/src/com/b2international/snowowl/core/rest/codesystem/CodeSystemRestService.java
@@ -24,7 +24,6 @@
 import org.springframework.web.bind.annotation.*;
 
 import com.b2international.commons.exceptions.NotFoundException;
-import com.b2international.index.revision.RevisionIndex;
 import com.b2international.snowowl.core.codesystem.CodeSystem;
 import com.b2international.snowowl.core.codesystem.CodeSystemRequests;
 import com.b2international.snowowl.core.codesystem.CodeSystems;
@@ -117,13 +116,10 @@ public Promise<CodeSystem> get(
 		@PathVariable(value="codeSystemId", required = true) 
 		final String codeSystemId,
 		
-		@Parameter(description = "The timestamp to use for historical ('as of') queries", deprecated = true)
-		final Long timestamp,
-		
 		@ParameterObject
 		final ResourceSelectors selectors) {
 		
-		return CodeSystemRequests.prepareGetCodeSystem(codeSystemId.contains(RevisionIndex.AT_CHAR) || timestamp == null ? CodeSystem.uri(codeSystemId) : CodeSystem.uri(codeSystemId).withTimestampPart(RevisionIndex.AT_CHAR + timestamp))
+		return CodeSystemRequests.prepareGetCodeSystem(CodeSystem.uri(codeSystemId))
 			.setExpand(selectors.getExpand())
 			.setFields(selectors.getField())
 			.buildAsync()