diff --git a/linux-user/alpha/target_signal.h b/linux-user/alpha/target_signal.h
index 0b6a39de65..bbb06e5463 100644
--- a/linux-user/alpha/target_signal.h
+++ b/linux-user/alpha/target_signal.h
@@ -62,7 +62,6 @@ typedef struct target_sigaltstack {
 #define TARGET_SA_SIGINFO       0x00000040
 
 #define TARGET_MINSIGSTKSZ	4096
-#define TARGET_SIGSTKSZ		16384
 
 /* From <asm/gentrap.h>.  */
 #define TARGET_GEN_INTOVF      -1      /* integer overflow */
diff --git a/linux-user/generic/signal.h b/linux-user/generic/signal.h
index ceaf8a876c..6fd05b77bb 100644
--- a/linux-user/generic/signal.h
+++ b/linux-user/generic/signal.h
@@ -69,7 +69,6 @@ typedef struct target_sigaltstack {
 #define TARGET_SS_DISABLE 2
 
 #define TARGET_MINSIGSTKSZ     2048
-#define TARGET_SIGSTKSZ        8192
 
 /* bit-flags */
 #define TARGET_SS_AUTODISARM (1U << 31) /* disable sas during sighandling */
diff --git a/linux-user/hppa/target_signal.h b/linux-user/hppa/target_signal.h
index d558119ee7..af6c2fce58 100644
--- a/linux-user/hppa/target_signal.h
+++ b/linux-user/hppa/target_signal.h
@@ -64,7 +64,6 @@ typedef struct target_sigaltstack {
 #define TARGET_SA_NOCLDWAIT     0x00000080
 
 #define TARGET_MINSIGSTKSZ	2048
-#define TARGET_SIGSTKSZ		8192
 
 /* bit-flags */
 #define TARGET_SS_AUTODISARM (1U << 31) /* disable sas during sighandling */
diff --git a/linux-user/mips/target_signal.h b/linux-user/mips/target_signal.h
index 780a4ddf29..fa542c1f4e 100644
--- a/linux-user/mips/target_signal.h
+++ b/linux-user/mips/target_signal.h
@@ -67,7 +67,6 @@ typedef struct target_sigaltstack {
 #define TARGET_SA_RESTORER      0x04000000      /* Only for O32 */
 
 #define TARGET_MINSIGSTKSZ    2048
-#define TARGET_SIGSTKSZ       8192
 
 #if defined(TARGET_ABI_MIPSO32)
 /* compare linux/arch/mips/kernel/signal.c:setup_frame() */
diff --git a/linux-user/mips64/target_signal.h b/linux-user/mips64/target_signal.h
index 275e9b7f9a..b05098f7f6 100644
--- a/linux-user/mips64/target_signal.h
+++ b/linux-user/mips64/target_signal.h
@@ -65,7 +65,6 @@ typedef struct target_sigaltstack {
 #define TARGET_SA_RESETHAND     0x80000000
 
 #define TARGET_MINSIGSTKSZ    2048
-#define TARGET_SIGSTKSZ       8192
 
 /* bit-flags */
 #define TARGET_SS_AUTODISARM (1U << 31) /* disable sas during sighandling */
diff --git a/linux-user/sparc/target_signal.h b/linux-user/sparc/target_signal.h
index e661ddd6ab..87757f0c4e 100644
--- a/linux-user/sparc/target_signal.h
+++ b/linux-user/sparc/target_signal.h
@@ -65,7 +65,6 @@ typedef struct target_sigaltstack {
 #define TARGET_ARCH_HAS_KA_RESTORER 1
 
 #define TARGET_MINSIGSTKSZ	4096
-#define TARGET_SIGSTKSZ		16384
 
 #ifdef TARGET_ABI32
 #define TARGET_ARCH_HAS_SETUP_FRAME