diff --git a/arm64/arm64asm/ext_test.go b/arm64/arm64asm/ext_test.go
index f432203..e8a79de 100644
--- a/arm64/arm64asm/ext_test.go
+++ b/arm64/arm64asm/ext_test.go
@@ -268,7 +268,7 @@
 	return
 }
 
-// decodecoverage returns a floating point number denoting the
+// decodeCoverage returns a floating point number denoting the
 // decoder coverage.
 func decodeCoverage() float64 {
 	n := 0
diff --git a/loong64/loong64asm/ext_test.go b/loong64/loong64asm/ext_test.go
index 5c90586..5e73c80 100644
--- a/loong64/loong64asm/ext_test.go
+++ b/loong64/loong64asm/ext_test.go
@@ -240,7 +240,7 @@
 	return
 }
 
-// decodecoverage returns a floating point number denoting the
+// decodeCoverage returns a floating point number denoting the
 // decoder coverage.
 func decodeCoverage() float64 {
 	n := 0
diff --git a/riscv64/riscv64asm/ext_test.go b/riscv64/riscv64asm/ext_test.go
index 25e2bf7..556cd01 100644
--- a/riscv64/riscv64asm/ext_test.go
+++ b/riscv64/riscv64asm/ext_test.go
@@ -242,7 +242,7 @@
 	return
 }
 
-// decodecoverage returns a floating point number denoting the
+// decodeCoverage returns a floating point number denoting the
 // decoder coverage.
 func decodeCoverage() float64 {
 	n := 0