diff --git a/Machines/Amiga/Copper.cpp b/Machines/Amiga/Copper.cpp
index d53c0beb1..01d6b30e9 100644
--- a/Machines/Amiga/Copper.cpp
+++ b/Machines/Amiga/Copper.cpp
@@ -21,10 +21,12 @@ using namespace Amiga;
 namespace {
 
 bool satisfies_raster(uint16_t position, uint16_t blitter_status, uint16_t *instruction) {
+	// Return immediately if: (i) wait-for-Blitter is not disabled; and (ii) the Blitter is busy.
+	if(!(instruction[1] & 0x8000) && (blitter_status & 0x4000)) return false;
+
+	// Otherwise, test the raster position against the instruction's value and mask.
 	const uint16_t mask = 0x8000 | (instruction[1] & 0x7ffe);
-	return
-		(position & mask) >= (instruction[0] & mask) &&
-		(!(blitter_status & 0x4000) || (instruction[1] & 0x8000));
+	return (position & mask) >= (instruction[0] & mask);
 }
 
 }