diff --git a/build.xml b/build.xml
index 4a9f81773a..156befd69d 100644
--- a/build.xml
+++ b/build.xml
@@ -324,7 +324,7 @@ under the License.
 
     <!-- See https://www.ecma-international.org/publications/standards/Ecma-376.htm -->
     <!-- "Copy these file(s), free of charge" -->
-    <property name="ooxml.xsds.izip.1" value="${basedir}/src/ooxml/resources/org/apache/poi/schemas/OfficeOpenXML-XMLSchema-Transitional.zip"/>
+    <property name="ooxml.xsds.izip.1" value="${basedir}/src/ooxml/resources/org/apache/poi/schemas/OfficeOpenXML-XMLSchema-Strict.zip"/>
     <property name="ooxml.xsds.src.dir" location="build/ooxml-xsds-src"/>
     <property name="ooxml.xsds.src.jar" location="build/dist/maven/poi-ooxml-full/poi-ooxml-full-${version.id}-sources.jar"/>
     <property name="ooxml.xsds.jar" location="build/dist/maven/poi-ooxml-full/poi-ooxml-full-${version.id}.jar"/>
diff --git a/src/ooxml/resources/org/apache/poi/schemas/OfficeOpenXML-XMLSchema-Strict.zip b/src/ooxml/resources/org/apache/poi/schemas/OfficeOpenXML-XMLSchema-Strict.zip
new file mode 100755
index 0000000000..c416a662fa
Binary files /dev/null and b/src/ooxml/resources/org/apache/poi/schemas/OfficeOpenXML-XMLSchema-Strict.zip differ
diff --git a/src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFSlideShowImpl.java b/src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFSlideShowImpl.java
index 52338244f8..b4cdd8ba80 100644
--- a/src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFSlideShowImpl.java
+++ b/src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFSlideShowImpl.java
@@ -394,7 +394,7 @@ public final class HSLFSlideShowImpl extends POIDocument implements Closeable {
                 // If they type (including the bonus 0xF018) is 0, skip it
                 PictureType pt = PictureType.forNativeID(type - 0xF018);
                 if (pt == null) {
-                    logger.log(POILogger.ERROR, "Problem reading picture: Invalid image type 0, on picture with length ", imgsize, ".\nYou document will probably become corrupted if you save it!");
+                    logger.log(POILogger.ERROR, "Problem reading picture: Invalid image type 0, on picture with length ", imgsize, ".\nYour document will probably become corrupted if you save it!");
                     logger.log(POILogger.ERROR, "position: ", pos);
                 } else {
                     //The pictstream can be truncated halfway through a picture.
@@ -418,7 +418,7 @@ public final class HSLFSlideShowImpl extends POIDocument implements Closeable {
                         pict.setIndex(_pictures.size());
                         _pictures.add(pict);
                     } catch (IllegalArgumentException e) {
-                        logger.log(POILogger.ERROR, "Problem reading picture: ", e, "\nYou document will probably become corrupted if you save it!");
+                        logger.log(POILogger.ERROR, "Problem reading picture: ", e, "\nYour document will probably become corrupted if you save it!");
                     }
                 }