diff --git a/libcpu/arm/cortex-m23/context_gcc.S b/libcpu/arm/cortex-m23/context_gcc.S
index 067348181d..48f90413d9 100644
--- a/libcpu/arm/cortex-m23/context_gcc.S
+++ b/libcpu/arm/cortex-m23/context_gcc.S
@@ -137,7 +137,7 @@ pendsv_exit:
     /* restore interrupt */
     MSR     PRIMASK, R2
 
-    MOVS    R0, #0x04
+    MOVS    R0, #0x03
     RSBS    R0, R0, #0x00
     BX      R0
 /*
diff --git a/libcpu/arm/cortex-m23/context_iar.S b/libcpu/arm/cortex-m23/context_iar.S
index 4d50d0fdec..c7d85cc5e2 100644
--- a/libcpu/arm/cortex-m23/context_iar.S
+++ b/libcpu/arm/cortex-m23/context_iar.S
@@ -139,7 +139,7 @@ pendsv_exit
     ; restore interrupt
     MSR     PRIMASK, r2
 
-    MOVS    r0, #0x04
+    MOVS    r0, #0x03
     RSBS    r0, r0, #0x00
     BX      r0
 
diff --git a/libcpu/arm/cortex-m23/context_rvds.S b/libcpu/arm/cortex-m23/context_rvds.S
index 4486ceaf08..ca381d0f8f 100644
--- a/libcpu/arm/cortex-m23/context_rvds.S
+++ b/libcpu/arm/cortex-m23/context_rvds.S
@@ -143,7 +143,7 @@ pendsv_exit
     ; restore interrupt
     MSR     PRIMASK, r2
 
-    MOVS    r0, #0x04
+    MOVS    r0, #0x03
     RSBS    r0, r0, #0x00
     BX      r0
     ENDP