diff --git a/src/java/org/apache/commons/math/transform/FastCosineTransformer.java b/src/java/org/apache/commons/math/transform/FastCosineTransformer.java
index dfcc539f2..3c9ccaa15 100644
--- a/src/java/org/apache/commons/math/transform/FastCosineTransformer.java
+++ b/src/java/org/apache/commons/math/transform/FastCosineTransformer.java
@@ -43,7 +43,7 @@ public class FastCosineTransformer implements Serializable {
     /**
      * Construct a default transformer.
      */
-    FastCosineTransformer() {
+    public FastCosineTransformer() {
         super();
     }
 
diff --git a/src/java/org/apache/commons/math/transform/FastFourierTransformer.java b/src/java/org/apache/commons/math/transform/FastFourierTransformer.java
index 1fcd0fdc7..97cc65aed 100644
--- a/src/java/org/apache/commons/math/transform/FastFourierTransformer.java
+++ b/src/java/org/apache/commons/math/transform/FastFourierTransformer.java
@@ -55,7 +55,7 @@ public class FastFourierTransformer implements Serializable {
     /**
      * Construct a default transformer.
      */
-    FastFourierTransformer() {
+    public FastFourierTransformer() {
         super();
     }
 
diff --git a/src/java/org/apache/commons/math/transform/FastSineTransformer.java b/src/java/org/apache/commons/math/transform/FastSineTransformer.java
index 41f0ef68d..525ef3eed 100644
--- a/src/java/org/apache/commons/math/transform/FastSineTransformer.java
+++ b/src/java/org/apache/commons/math/transform/FastSineTransformer.java
@@ -43,7 +43,7 @@ public class FastSineTransformer implements Serializable {
     /**
      * Construct a default transformer.
      */
-    FastSineTransformer() {
+    public FastSineTransformer() {
         super();
     }