diff --git a/projects/Math/73/org/apache/commons/math/analysis/solvers/BrentSolver.java b/projects/Math/73/org/apache/commons/math/analysis/solvers/BrentSolver.java
index 8142b5e..e0cb427 100644
--- a/projects/Math/73/org/apache/commons/math/analysis/solvers/BrentSolver.java
+++ b/projects/Math/73/org/apache/commons/math/analysis/solvers/BrentSolver.java
@@ -133,6 +133,10 @@ public double solve(final UnivariateRealFunction f,
             return solve(f, initial, yInitial, max, yMax, initial, yInitial);
         }
 
+        if (yMin * yMax > 0) {
+            throw MathRuntimeException.createIllegalArgumentException(
+                  NON_BRACKETING_MESSAGE, min, max, yMin, yMax);
+        }
 
         // full Brent algorithm starting with provided initial guess
         return solve(f, min, yMin, max, yMax, initial, yInitial);