diff --git a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/analysis/interpolation/InterpolatingMicrosphere.java b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/analysis/interpolation/InterpolatingMicrosphere.java
index 79fc28a..88f5c02 100644
--- a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/analysis/interpolation/InterpolatingMicrosphere.java
+++ b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/analysis/interpolation/InterpolatingMicrosphere.java
@@ -51,7 +51,7 @@
     private final double background;
 
     /**
-     * Create an unitialiazed sphere.
+     * Create an uninitialized sphere.
      * Sub-classes are responsible for calling the {@code add(double[]) add}
      * method in order to initialize all the sphere's facets.
      *