diff --git a/nx/include/switch/applets/swkbd.h b/nx/include/switch/applets/swkbd.h
index e123b7e5..01af0d3b 100644
--- a/nx/include/switch/applets/swkbd.h
+++ b/nx/include/switch/applets/swkbd.h
@@ -210,8 +210,8 @@ typedef struct {
     u8 dicFlag;                      ///< Enables dictionary usage when non-zero (including the system dictionary).
     u8 unk_x1b;
     u32 keySetDisableBitmask;        ///< See SwkbdKeyDisableBitmask_*.
-    s32 unk_x20;
-    s32 unk_x24;
+    s32 stringLenMax;                ///< When non-negative and non-zero, specifies the max string length. When the input is too long, swkbd will stop accepting more input until text is deleted via the B button (Backspace).
+    s32 stringLenMin;                ///< When non-negative and non-zero, specifies the min string length. When the input is too short, swkbd will display an icon and disable the ok-button.
     u8 returnButtonFlag;             ///< Controls whether the Return button is enabled, for newlines input. 0 = disabled, non-zero = enabled.
     u8 unk_x29;                      ///< [10.0.0+] When value 1-2, \ref swkbdInlineAppear / \ref swkbdInlineAppearEx will set keytopAsFloating=0 and footerScalable=1.
     u8 unk_x2a;
@@ -805,6 +805,24 @@ void swkbdInlineAppearArgSetLeftButtonText(SwkbdAppearArg* arg, const char* str)
  */
 void swkbdInlineAppearArgSetRightButtonText(SwkbdAppearArg* arg, const char* str);
 
+/**
+ * @brief Sets the stringLenMax for the specified SwkbdAppearArg, which was previously initialized with \ref swkbdInlineMakeAppearArg.
+ * @param arg \ref SwkbdAppearArg
+ * @param stringLenMax Max string length
+ */
+static inline void swkbdInlineAppearArgSetStringLenMax(SwkbdAppearArg* arg, s32 stringLenMax) {
+    arg->stringLenMax = stringLenMax;
+}
+
+/**
+ * @brief Sets the stringLenMin for the specified SwkbdAppearArg, which was previously initialized with \ref swkbdInlineMakeAppearArg.
+ * @param arg \ref SwkbdAppearArg
+ * @param stringLenMin Min string length
+ */
+static inline void swkbdInlineAppearArgSetStringLenMin(SwkbdAppearArg* arg, s32 stringLenMin) {
+    arg->stringLenMin = stringLenMin;
+}
+
 /**
  * @brief Sets the audio volume.
  * @note \ref swkbdInlineUpdate must be called at some point afterwards for this to take affect.
diff --git a/nx/source/applets/swkbd.c b/nx/source/applets/swkbd.c
index 529ed225..94ae163e 100644
--- a/nx/source/applets/swkbd.c
+++ b/nx/source/applets/swkbd.c
@@ -393,8 +393,8 @@ Result swkbdInlineCreate(SwkbdInline* s) {
     s->calcArg.appearArg.type = SwkbdType_QWERTY;
     s->calcArg.unk_x6 = 1;
     s->calcArg.unk_x7 = 1;
-    s->calcArg.appearArg.unk_x20 = -1;
-    s->calcArg.appearArg.unk_x24 = -1;
+    s->calcArg.appearArg.stringLenMax = -1;
+    s->calcArg.appearArg.stringLenMin = -1;
     s->calcArg.appearArg.unk_x30 = 1;
 
     s->calcArg.enableBackspace = 1;
@@ -896,8 +896,8 @@ void swkbdInlineDisappear(SwkbdInline* s) {
 void swkbdInlineMakeAppearArg(SwkbdAppearArg* arg, SwkbdType type) {
     memset(arg, 0, sizeof(SwkbdAppearArg));
 
-    arg->unk_x20 = -1;
-    arg->unk_x24 = -1;
+    arg->stringLenMax = -1;
+    arg->stringLenMin = -1;
     arg->unk_x30 = 1;
     arg->type = type;
 }