diff --git a/es-core/src/guis/GuiDetectDevice.cpp b/es-core/src/guis/GuiDetectDevice.cpp
index 022cfd918..78dc50cd3 100644
--- a/es-core/src/guis/GuiDetectDevice.cpp
+++ b/es-core/src/guis/GuiDetectDevice.cpp
@@ -77,7 +77,12 @@ GuiDetectDevice::GuiDetectDevice(
             Font::get(FONT_SIZE_MEDIUM), 0xFFFFFFFF, ALIGN_CENTER);
     mGrid.setEntry(mDeviceHeld, Vector2i(0, 4), false, true);
 
-    setSize(Renderer::getScreenWidth() * 0.6f, Renderer::getScreenHeight() * 0.5f);
+    // For narrower displays (e.g. in 4:3 ratio), allow the window to fill 80% of the screen
+    // width rather than the 60% allowed for wider displays.
+    float width = Renderer::getScreenWidth() *
+            ((Renderer::getScreenAspectRatio() < 1.4f) ? 0.8f : 0.6f);
+
+    setSize(width, Renderer::getScreenHeight() * 0.5f);
     setPosition((Renderer::getScreenWidth() - mSize.x()) / 2,
             (Renderer::getScreenHeight() - mSize.y()) / 2);
 }
diff --git a/es-core/src/guis/GuiInputConfig.cpp b/es-core/src/guis/GuiInputConfig.cpp
index 444f25a38..308b79d5a 100644
--- a/es-core/src/guis/GuiInputConfig.cpp
+++ b/es-core/src/guis/GuiInputConfig.cpp
@@ -251,7 +251,12 @@ GuiInputConfig::GuiInputConfig(
     mButtonGrid = makeButtonGrid(mWindow, buttons);
     mGrid.setEntry(mButtonGrid, Vector2i(0, 6), true, false);
 
-    setSize(Renderer::getScreenWidth() * 0.6f, Renderer::getScreenHeight() * 0.75f);
+    // For narrower displays (e.g. in 4:3 ratio), allow the window to fill 80% of the screen
+    // width rather than the 60% allowed for wider displays.
+    float width = Renderer::getScreenWidth() *
+            ((Renderer::getScreenAspectRatio() < 1.4f) ? 0.8f : 0.6f);
+
+    setSize(width, Renderer::getScreenHeight() * 0.75f);
     setPosition((Renderer::getScreenWidth() - mSize.x()) / 2,
             (Renderer::getScreenHeight() - mSize.y()) / 2);
 }
diff --git a/es-core/src/guis/GuiTextEditPopup.cpp b/es-core/src/guis/GuiTextEditPopup.cpp
index bb7ec7f00..1aa6fa1f9 100644
--- a/es-core/src/guis/GuiTextEditPopup.cpp
+++ b/es-core/src/guis/GuiTextEditPopup.cpp
@@ -62,7 +62,12 @@ GuiTextEditPopup::GuiTextEditPopup(
         textHeight *= 6;
     mText->setSize(0, textHeight);
 
-    setSize(Renderer::getScreenWidth() * 0.5f, mTitle->getFont()->getHeight() +
+    // For narrower displays (e.g. in 4:3 ratio), allow the window to fill 70% of the screen
+    // width rather than the 50% allowed for wider displays.
+    float width = Renderer::getScreenWidth() *
+            ((Renderer::getScreenAspectRatio() < 1.4f) ? 0.7f : 0.5f);
+
+    setSize(width, mTitle->getFont()->getHeight() +
             textHeight + mButtonGrid->getSize().y() + mButtonGrid->getSize().y() / 2);
     setPosition((Renderer::getScreenWidth() - mSize.x()) / 2, (Renderer::getScreenHeight() -
             mSize.y()) / 2);
diff --git a/es-core/src/renderers/Renderer.cpp b/es-core/src/renderers/Renderer.cpp
index 44c777ce1..c21e0686f 100644
--- a/es-core/src/renderers/Renderer.cpp
+++ b/es-core/src/renderers/Renderer.cpp
@@ -38,6 +38,7 @@ namespace Renderer
     // Screen resolution modifiers relative to the 1920x1080 reference.
     static float screenHeightModifier;
     static float screenWidthModifier;
+    static float screenAspectRatio;
 
     static void setIcon()
     {
@@ -140,6 +141,7 @@ namespace Renderer
 
         screenHeightModifier = static_cast<float>(screenHeight) / 1080.0f;
         screenWidthModifier = static_cast<float>(screenWidth) / 1920.0f;
+        screenAspectRatio = static_cast<float>(screenWidth) / static_cast<float>(screenHeight);
 
         // Prevent the application window from minimizing when switching windows (when launching
         // games or when manually switching windows using the task switcher).
@@ -506,5 +508,6 @@ namespace Renderer
     int getScreenRotate() { return screenRotate; }
     float getScreenWidthModifier() { return screenWidthModifier; }
     float getScreenHeightModifier() { return screenHeightModifier; }
+    float getScreenAspectRatio() { return screenAspectRatio; }
 
 } // Renderer::
diff --git a/es-core/src/renderers/Renderer.h b/es-core/src/renderers/Renderer.h
index 10bb80802..56f7fe04b 100644
--- a/es-core/src/renderers/Renderer.h
+++ b/es-core/src/renderers/Renderer.h
@@ -158,6 +158,7 @@ namespace Renderer
     int getScreenRotate();
     float getScreenWidthModifier();
     float getScreenHeightModifier();
+    float getScreenAspectRatio();
 
     unsigned int convertRGBAToABGR(unsigned int color);
     unsigned int convertABGRToRGBA(unsigned int color);