diff --git a/src/runtime/sys_windows_386.s b/src/runtime/sys_windows_386.s
index d120746bb6..d29049899e 100644
--- a/src/runtime/sys_windows_386.s
+++ b/src/runtime/sys_windows_386.s
@@ -111,8 +111,6 @@ TEXT runtime·lastcontinuetramp(SB),NOSPLIT,$0-0
 	MOVL	$const_callbackLastVCH, CX
 	JMP	sigtramp<>(SB)
 
-GLOBL runtime·cbctxts(SB), NOPTR, $4
-
 TEXT runtime·callbackasm1(SB),NOSPLIT,$0
   	MOVL	0(SP), AX	// will use to find our callback context
 
diff --git a/src/runtime/sys_windows_amd64.s b/src/runtime/sys_windows_amd64.s
index 5734a3a555..8780c45b1a 100644
--- a/src/runtime/sys_windows_amd64.s
+++ b/src/runtime/sys_windows_amd64.s
@@ -140,8 +140,6 @@ TEXT runtime·lastcontinuetramp(SB),NOSPLIT|NOFRAME,$0-0
 	MOVQ	$const_callbackLastVCH, DX
 	JMP	sigtramp<>(SB)
 
-GLOBL runtime·cbctxts(SB), NOPTR, $8
-
 TEXT runtime·callbackasm1(SB),NOSPLIT|NOFRAME,$0
 	// Construct args vector for cgocallback().
 	// By windows/amd64 calling convention first 4 args are in CX, DX, R8, R9
diff --git a/src/runtime/sys_windows_arm.s b/src/runtime/sys_windows_arm.s
index 78cc3333c7..f6496b8d05 100644
--- a/src/runtime/sys_windows_arm.s
+++ b/src/runtime/sys_windows_arm.s
@@ -131,8 +131,6 @@ TEXT runtime·lastcontinuetramp(SB),NOSPLIT|NOFRAME,$0
 	MOVW	$const_callbackLastVCH, R1
 	B	sigtramp<>(SB)
 
-GLOBL runtime·cbctxts(SB), NOPTR, $4
-
 TEXT runtime·callbackasm1(SB),NOSPLIT|NOFRAME,$0
 	// On entry, the trampoline in zcallback_windows_arm.s left
 	// the callback index in R12 (which is volatile in the C ABI).
diff --git a/src/runtime/sys_windows_arm64.s b/src/runtime/sys_windows_arm64.s
index ab6944c9ea..c78d37314a 100644
--- a/src/runtime/sys_windows_arm64.s
+++ b/src/runtime/sys_windows_arm64.s
@@ -155,8 +155,6 @@ TEXT runtime·lastcontinuetramp(SB),NOSPLIT|NOFRAME,$0
 	MOVD	$const_callbackLastVCH, R1
 	B	sigtramp<>(SB)
 
-GLOBL runtime·cbctxts(SB), NOPTR, $4
-
 TEXT runtime·callbackasm1(SB),NOSPLIT,$208-0
 	NO_LOCAL_POINTERS