diff --git a/sys/amd64/amd64/trap.c b/sys/amd64/amd64/trap.c
index 1e6b58c81827..3eaf3fd1b10d 100644
--- a/sys/amd64/amd64/trap.c
+++ b/sys/amd64/amd64/trap.c
@@ -630,6 +630,7 @@ trap(struct trapframe *frame)
 		    fubyte((void *)(frame->tf_rip + 6)),
 		    fubyte((void *)(frame->tf_rip + 7)));
 	}
+	KASSERT((read_rflags() & PSL_I) != 0, ("interrupts disabled"));
 	trapsignal(td, &ksi);
 
 user:
diff --git a/sys/i386/i386/trap.c b/sys/i386/i386/trap.c
index 9c8b62de8052..3fe7c0c36e93 100644
--- a/sys/i386/i386/trap.c
+++ b/sys/i386/i386/trap.c
@@ -780,6 +780,7 @@ trap(struct trapframe *frame)
 		    fubyte((void *)(frame->tf_eip + 6)),
 		    fubyte((void *)(frame->tf_eip + 7)));
 	}
+	KASSERT((read_eflags() & PSL_I) != 0, ("interrupts disabled"));
 	trapsignal(td, &ksi);
 
 #ifdef DEBUG