diff --git a/src/coreclr/inc/crosscomp.h b/src/coreclr/inc/crosscomp.h
index 4c30eb01ba8ae9..5473076a59398a 100644
--- a/src/coreclr/inc/crosscomp.h
+++ b/src/coreclr/inc/crosscomp.h
@@ -210,7 +210,9 @@ typedef struct _T_DISPATCHER_CONTEXT {
 #define ARM64_MAX_BREAKPOINTS     8
 #define ARM64_MAX_WATCHPOINTS     2
 
+#ifndef CONTEXT_UNWOUND_TO_CALL
 #define CONTEXT_UNWOUND_TO_CALL 0x20000000
+#endif
 
 typedef union _NEON128 {
     struct {
@@ -413,7 +415,9 @@ enum
 #define LOONGARCH64_MAX_BREAKPOINTS     8
 #define LOONGARCH64_MAX_WATCHPOINTS     2
 
+#ifndef CONTEXT_UNWOUND_TO_CALL
 #define CONTEXT_UNWOUND_TO_CALL 0x20000000
+#endif
 
 typedef struct DECLSPEC_ALIGN(16) _T_CONTEXT {
 
@@ -546,7 +550,9 @@ typedef struct _T_KNONVOLATILE_CONTEXT_POINTERS {
 #define RISCV64_MAX_BREAKPOINTS     8
 #define RISCV64_MAX_WATCHPOINTS     2
 
+#ifndef CONTEXT_UNWOUND_TO_CALL
 #define CONTEXT_UNWOUND_TO_CALL 0x20000000
+#endif
 
 typedef struct DECLSPEC_ALIGN(16) _T_CONTEXT {