diff --git a/linux.md b/linux.md
index aad1bb32..8f04085a 100644
--- a/linux.md
+++ b/linux.md
@@ -81,7 +81,7 @@ This is based on Qt, currently tested with 5.10
 * full speed when disk spins execute up to 5 ms real wall clock of emulator code (then returns to Qt)
 * (standard) audio is supported and there are a few configuration options to tune the latency (default very conservative 200ms)
 * plain mockingboard is supported as well (not speech, which hang the emulator)
-* Open Apple and Closed Apple can be emulated using AltGr and Menu (unfortunately, Alt does not work well)
+* Open Apple and Solid Apple can be emulated using AltGr and Menu (unfortunately, Alt does not work well)
 
 ## Build
 
diff --git a/source/frontends/qapple/video.cpp b/source/frontends/qapple/video.cpp
index d41b1c92..762cef96 100644
--- a/source/frontends/qapple/video.cpp
+++ b/source/frontends/qapple/video.cpp
@@ -108,7 +108,7 @@ void Video::keyReleaseEvent(QKeyEvent *event)
             Paddle::setButtonReleased(Paddle::ourOpenApple);
             return;
         case Qt::Key_Menu:
-            Paddle::setButtonReleased(Paddle::ourClosedApple);
+            Paddle::setButtonReleased(Paddle::ourSolidApple);
             return;
         }
     }
@@ -128,7 +128,7 @@ void Video::keyPressEvent(QKeyEvent *event)
             Paddle::setButtonPressed(Paddle::ourOpenApple);
             return;
         case Qt::Key_Menu:
-            Paddle::setButtonPressed(Paddle::ourClosedApple);
+            Paddle::setButtonPressed(Paddle::ourSolidApple);
             return;
         }
     }
diff --git a/source/frontends/sa2/main.cpp b/source/frontends/sa2/main.cpp
index f852e8e0..1cac1730 100644
--- a/source/frontends/sa2/main.cpp
+++ b/source/frontends/sa2/main.cpp
@@ -334,7 +334,7 @@ void run_sdl(int argc, const char * argv [])
 	  }
 	  case SDL_SCANCODE_RALT:
 	  {
-	    Paddle::setButtonPressed(Paddle::ourClosedApple);
+	    Paddle::setButtonPressed(Paddle::ourSolidApple);
 	    break;
 	  }
 	  }
@@ -353,7 +353,7 @@ void run_sdl(int argc, const char * argv [])
 	}
 	case SDL_SCANCODE_RALT:
 	{
-	  Paddle::setButtonReleased(Paddle::ourClosedApple);
+	  Paddle::setButtonReleased(Paddle::ourSolidApple);
 	  break;
 	}
 	}
diff --git a/source/linux/paddle.cpp b/source/linux/paddle.cpp
index 252adde2..a9f3cbb4 100644
--- a/source/linux/paddle.cpp
+++ b/source/linux/paddle.cpp
@@ -74,7 +74,7 @@ BYTE __stdcall JoyReadButton(WORD pc, WORD addr, BYTE bWrite, BYTE d, ULONG uExe
       case Paddle::ourOpenApple:
         pressed = paddle->getButton(0);
         break;
-      case Paddle::ourClosedApple:
+      case Paddle::ourSolidApple:
         pressed = paddle->getButton(1);
         break;
       case Paddle::ourThirdApple:
diff --git a/source/linux/paddle.h b/source/linux/paddle.h
index 23f589dd..94715adb 100644
--- a/source/linux/paddle.h
+++ b/source/linux/paddle.h
@@ -14,7 +14,7 @@ public:
   virtual int getAxis(int i) const;
 
   static constexpr int ourOpenApple = 0x61;
-  static constexpr int ourClosedApple = 0x62;
+  static constexpr int ourSolidApple = 0x62;
   static constexpr int ourThirdApple = 0x63;
 
   static void setButtonPressed(int i);