diff --git a/poi/src/main/java/org/apache/poi/ss/formula/functions/BooleanFunction.java b/poi/src/main/java/org/apache/poi/ss/formula/functions/BooleanFunction.java
index 1ef3f9c056..2f0611cfba 100644
--- a/poi/src/main/java/org/apache/poi/ss/formula/functions/BooleanFunction.java
+++ b/poi/src/main/java/org/apache/poi/ss/formula/functions/BooleanFunction.java
@@ -18,6 +18,7 @@
 package org.apache.poi.ss.formula.functions;
 
 import org.apache.poi.ss.formula.TwoDEval;
+import org.apache.poi.ss.formula.eval.BlankEval;
 import org.apache.poi.ss.formula.eval.BoolEval;
 import org.apache.poi.ss.formula.eval.ErrorEval;
 import org.apache.poi.ss.formula.eval.EvaluationException;
@@ -91,7 +92,7 @@ public abstract class BooleanFunction implements Function,ArrayFunction {
                 continue;
             }
 
-            if (arg == MissingArgEval.instance) {
+            if (arg == MissingArgEval.instance || arg == BlankEval.instance) {
                 tempVe = false;     // missing parameters are treated as FALSE
             } else {
                 tempVe = OperandResolver.coerceValueToBoolean(arg, false);
diff --git a/test-data/spreadsheet/BooleanFunctionsTestCaseData.xls b/test-data/spreadsheet/BooleanFunctionsTestCaseData.xls
index 44808a5112..ded3ccf195 100644
Binary files a/test-data/spreadsheet/BooleanFunctionsTestCaseData.xls and b/test-data/spreadsheet/BooleanFunctionsTestCaseData.xls differ
diff --git a/test-data/spreadsheet/LookupFunctionsTestCaseData.xls b/test-data/spreadsheet/LookupFunctionsTestCaseData.xls
index d9e9b517d8..8ef287c8c1 100644
Binary files a/test-data/spreadsheet/LookupFunctionsTestCaseData.xls and b/test-data/spreadsheet/LookupFunctionsTestCaseData.xls differ