diff --git a/base-foc/src/core/include/cpu_session_component.h b/base-foc/src/core/include/cpu_session_component.h
index 143306720..ac4d9e13e 100644
--- a/base-foc/src/core/include/cpu_session_component.h
+++ b/base-foc/src/core/include/cpu_session_component.h
@@ -72,7 +72,7 @@ namespace Genode {
 
 			void sigh(Signal_context_capability sigh)
 			{
-				sigh = sigh;
+				_sigh = sigh;
 				update_exception_sigh();
 			}
 
diff --git a/base-linux/src/core/include/cpu_session_component.h b/base-linux/src/core/include/cpu_session_component.h
index 74c472953..789c8ea62 100644
--- a/base-linux/src/core/include/cpu_session_component.h
+++ b/base-linux/src/core/include/cpu_session_component.h
@@ -72,7 +72,7 @@ namespace Genode {
 
 			void sigh(Signal_context_capability sigh)
 			{
-				sigh = sigh;
+				_sigh = sigh;
 				update_exception_sigh();
 			}
 
diff --git a/base-nova/src/core/include/cpu_session_component.h b/base-nova/src/core/include/cpu_session_component.h
index d540523c4..5d33e743c 100644
--- a/base-nova/src/core/include/cpu_session_component.h
+++ b/base-nova/src/core/include/cpu_session_component.h
@@ -72,7 +72,7 @@ namespace Genode {
 
 			void sigh(Signal_context_capability sigh)
 			{
-				sigh = sigh;
+				_sigh = sigh;
 				update_exception_sigh();
 			}
 
diff --git a/base/src/core/include/cpu_session_component.h b/base/src/core/include/cpu_session_component.h
index 74f19c4e0..d108368fe 100644
--- a/base/src/core/include/cpu_session_component.h
+++ b/base/src/core/include/cpu_session_component.h
@@ -71,7 +71,7 @@ namespace Genode {
 
 			void sigh(Signal_context_capability sigh)
 			{
-				sigh = sigh;
+				_sigh = sigh;
 				update_exception_sigh();
 			}