diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeGrades.kt b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeGrades.kt
index 0414bd0a..9e1da4f2 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeGrades.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/vulcan/data/hebe/VulcanHebeGrades.kt
@@ -38,7 +38,7 @@ class VulcanHebeGrades(
                 val column = grade.getJsonObject("Column")
                 val category = column.getJsonObject("Category")
                 val categoryText = category.getString("Name")
-                val code = column.getString("Code").orNullIfEmpty()
+                val code = column.getString("Code").takeValue()
 
                 val teacherId = getTeacherId(grade, "Creator") ?: -1
                 val subjectId = getSubjectId(column, "Subject") ?: -1
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ext/TextExtensions.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ext/TextExtensions.kt
index d8853178..d4149320 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ext/TextExtensions.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ext/TextExtensions.kt
@@ -141,8 +141,6 @@ fun String.fixWhiteSpaces() = buildString(length) {
     }
 }.trimEnd()
 
-fun String?.orNullIfEmpty(): String? = if (this.isNullOrEmpty()) null else this
-
 fun CharSequence?.asColoredSpannable(colorInt: Int): Spannable {
     val spannable = SpannableString(this)
     spannable.setSpan(ForegroundColorSpan(colorInt), 0, spannable.length, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE)