diff --git a/examples/doc_properties.c b/examples/doc_properties.c
index 4b0efd6b..285ed564 100644
--- a/examples/doc_properties.c
+++ b/examples/doc_properties.c
@@ -34,8 +34,20 @@ int main() {
     worksheet_write_string(worksheet, 0, 0,
         "Select 'Workbook Properties' to see properties." , NULL);
 
-     workbook_close(workbook);
+    workbook_close(workbook);
 
+    /* Clean up memory used for properties. */
+    free(properties->title);
+    free(properties->subject);
+    free(properties->author);
+    free(properties->manager);
+    free(properties->company);
+    free(properties->category);
+    free(properties->keywords);
+    free(properties->comments);
+    free(properties->status);
     free(properties);
+
+
     return 0;
 }
diff --git a/test/functional/src/test_properties01.c b/test/functional/src/test_properties01.c
index 29205f8e..9296dea8 100644
--- a/test/functional/src/test_properties01.c
+++ b/test/functional/src/test_properties01.c
@@ -30,5 +30,16 @@ int main() {
     worksheet_set_column(worksheet, 0, 0, 70, NULL, NULL);
     worksheet_write_string(worksheet, CELL("A1"), "Select 'Office Button -> Prepare -> Properties' to see the file properties." , NULL);
 
+    free(properties->title);
+    free(properties->subject);
+    free(properties->author);
+    free(properties->manager);
+    free(properties->company);
+    free(properties->category);
+    free(properties->keywords);
+    free(properties->comments);
+    free(properties->status);
+    free(properties);
+
     return workbook_close(workbook);
 }
diff --git a/test/functional/src/test_properties02.c b/test/functional/src/test_properties02.c
index fe185632..a7af5614 100644
--- a/test/functional/src/test_properties02.c
+++ b/test/functional/src/test_properties02.c
@@ -21,5 +21,8 @@ int main() {
 
     (void)worksheet;
 
+    free(properties->hyperlink_base);
+    free(properties);
+
     return workbook_close(workbook);
 }