diff --git a/source/cell/rich_text.cpp b/source/cell/rich_text.cpp
index d7c0d9d7..1e0d666c 100644
--- a/source/cell/rich_text.cpp
+++ b/source/cell/rich_text.cpp
@@ -29,12 +29,12 @@
 namespace xlnt {
 
 rich_text::rich_text(const std::string &plain_text)
-    : rich_text({plain_text, optional<font>()})
+    : rich_text(rich_text_run{plain_text, optional<font>(), false})
 {
 }
 
 rich_text::rich_text(const std::string &plain_text, const class font &text_font)
-    : rich_text({plain_text, optional<font>(text_font)})
+    : rich_text({plain_text, optional<font>(text_font), false})
 {
 }
 
diff --git a/source/detail/serialization/xlsx_producer.cpp b/source/detail/serialization/xlsx_producer.cpp
index 0717d408..06d46292 100644
--- a/source/detail/serialization/xlsx_producer.cpp
+++ b/source/detail/serialization/xlsx_producer.cpp
@@ -45,14 +45,6 @@
 
 namespace {
 
-/// <summary>
-/// Returns true if d is exactly equal to an integer.
-/// </summary>
-bool is_integral(double d)
-{
-    return std::fabs(d - static_cast<double>(static_cast<long long int>(d))) == 0.0;
-}
-
 std::vector<std::pair<std::string, std::string>> core_property_namespace(xlnt::core_property type)
 {
     using xlnt::core_property;