diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC
index a0de3bda7348..fa2588d5153f 100644
--- a/sys/amd64/conf/GENERIC
+++ b/sys/amd64/conf/GENERIC
@@ -58,6 +58,7 @@ options 	INVARIANTS		#Enable calls of extra sanity checking
 options 	INVARIANT_SUPPORT	#Extra sanity checks of internal structures, required by INVARIANTS
 options 	WITNESS			#Enable checks to detect deadlocks and cycles
 options 	WITNESS_SKIPSPIN	#Don't run witness on spinlocks for speed
+options 	ALT_BREAK_TO_DEBUGGER
 
 # To make an SMP kernel, the next two are needed
 #options 	SMP			# Symmetric MultiProcessor Kernel
diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC
index a0de3bda7348..fa2588d5153f 100644
--- a/sys/i386/conf/GENERIC
+++ b/sys/i386/conf/GENERIC
@@ -58,6 +58,7 @@ options 	INVARIANTS		#Enable calls of extra sanity checking
 options 	INVARIANT_SUPPORT	#Extra sanity checks of internal structures, required by INVARIANTS
 options 	WITNESS			#Enable checks to detect deadlocks and cycles
 options 	WITNESS_SKIPSPIN	#Don't run witness on spinlocks for speed
+options 	ALT_BREAK_TO_DEBUGGER
 
 # To make an SMP kernel, the next two are needed
 #options 	SMP			# Symmetric MultiProcessor Kernel