diff --git a/legacy/src/main/java/org/openscience/cdk/ringsearch/Queue.java b/legacy/src/main/java/org/openscience/cdk/ringsearch/Queue.java
index 4064db6290..8808e25e4c 100644
--- a/legacy/src/main/java/org/openscience/cdk/ringsearch/Queue.java
+++ b/legacy/src/main/java/org/openscience/cdk/ringsearch/Queue.java
@@ -31,7 +31,9 @@
  *
  * @cdk.module standard
  * @cdk.githash
+ * @deprecated internal implemenation detail from SSSRFinder, do not use
  */
+@Deprecated
 public class Queue extends Vector {
 
     private static final long serialVersionUID = 1008167867733841614L;
diff --git a/legacy/src/main/java/org/openscience/cdk/ringsearch/SSSRFinder.java b/legacy/src/main/java/org/openscience/cdk/ringsearch/SSSRFinder.java
index 74005b9e57..3e7583dcd4 100644
--- a/legacy/src/main/java/org/openscience/cdk/ringsearch/SSSRFinder.java
+++ b/legacy/src/main/java/org/openscience/cdk/ringsearch/SSSRFinder.java
@@ -53,8 +53,10 @@
  * @cdk.keyword smallest-set-of-rings
  * @cdk.keyword ring search
  * @cdk.dictref blue-obelisk:findSmallestSetOfSmallestRings_Berger
- *
+ * @deprecated Use the {@link org.openscience.cdk.graph.Cycles} API
+ *             {@link org.openscience.cdk.graph.Cycles#sssr(IAtomContainer)}
  */
+@Deprecated
 public class SSSRFinder {
 
     private IAtomContainer atomContainer;
diff --git a/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/CycleBasis.java b/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/CycleBasis.java
index c550da364b..ca3d76f69a 100644
--- a/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/CycleBasis.java
+++ b/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/CycleBasis.java
@@ -52,9 +52,9 @@
  *
  * @cdk.module standard
  * @cdk.githash
- *
+ * @deprecated internal implemenation detail from SSSRFinder, do not use
  */
-
+@Deprecated
 public class CycleBasis {
 
     //private List cycles = new Vector();
diff --git a/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycle.java b/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycle.java
index fe40849806..fde6cd4011 100644
--- a/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycle.java
+++ b/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycle.java
@@ -44,8 +44,9 @@
  *
  * @cdk.keyword smallest-set-of-rings
  * @cdk.keyword ring search
- *
+ * @deprecated internal implemenation detail from SSSRFinder, do not use
  */
+@Deprecated
 public class SimpleCycle extends UndirectedSubgraph {
 
     private static final long serialVersionUID = -3330742084804445688L;
diff --git a/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycleBasis.java b/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycleBasis.java
index 750baaa148..5c4a64db49 100644
--- a/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycleBasis.java
+++ b/legacy/src/main/java/org/openscience/cdk/ringsearch/cyclebasis/SimpleCycleBasis.java
@@ -56,9 +56,9 @@
  *
  * @cdk.module standard
  * @cdk.githash
- *
+ * @deprecated internal implemenation detail from SSSRFinder, do not use
  */
-
+@Deprecated
 public class SimpleCycleBasis {
 
     private List              edgeList;