diff --git a/PyTeX/format/formatting_config.py b/PyTeX/format/formatting_config.py
index 656765c..7e54af6 100644
--- a/PyTeX/format/formatting_config.py
+++ b/PyTeX/format/formatting_config.py
@@ -53,31 +53,35 @@ class FormattingConfig(Config):
         header = filled_content[YAML_HEADER]
         extra = header[YAML_EXTRA]
         self._include_extra_header = extra[YAML_INCLUDE_EXTRA_HEADER]
-        self._extra_header = GenericText(
-            extra[YAML_PATH] if extra[YAML_PATH] else extra[YAML_TEXT]
-        )
+        if extra[YAML_PATH] or extra[YAML_TEXT]:
+            self._extra_header = GenericText(
+                extra[YAML_PATH] if extra[YAML_PATH] else extra[YAML_TEXT]
+            )
 
         repo = header[YAML_REPO]
         self._include_repo_info_text = repo[YAML_INCLUDE_INFO_TEXT]
         self._include_repo_version = repo[YAML_INCLUDE_VERSION]
-        self._repo_info_text = GenericText(
-            repo[YAML_PATH] if repo[YAML_PATH] else repo[YAML_TEXT]
-        )
+        if repo[YAML_PATH] or repo[YAML_TEXT]:
+            self._repo_info_text = GenericText(
+                repo[YAML_PATH] if repo[YAML_PATH] else repo[YAML_TEXT]
+            )
 
         pytex = header[YAML_PYTEX]
         self._include_pytex_info_text = pytex[YAML_INCLUDE_INFO_TEXT]
         self._include_pytex_version = pytex[YAML_INCLUDE_VERSION]
-        self._pytex_info_text = GenericText(
-            pytex[YAML_PATH] if pytex[YAML_PATH] else pytex[YAML_TEXT]
-        )
+        if pytex[YAML_PATH] or pytex[YAML_TEXT]:
+            self._pytex_info_text = GenericText(
+                pytex[YAML_PATH] if pytex[YAML_PATH] else pytex[YAML_TEXT]
+            )
 
         self._include_time = header[YAML_INCLUDE_TIME]
 
         license_ = header[YAML_LICENSE]
         self._include_license = license_[YAML_INCLUDE_LICENSE]
-        self._license = GenericText(
-            license_[YAML_PATH] if license_[YAML_PATH] else license_[YAML_TEXT]
-        )
+        if license_[YAML_PATH] or license_[YAML_TEXT]:
+            self._license = GenericText(
+                license_[YAML_PATH] if license_[YAML_PATH] else license_[YAML_TEXT]
+            )
 
         docstrip = filled_content[YAML_DOCSTRIP]
         self._include_drv = docstrip[YAML_INCLUDE_DRV]