diff -r 29800666e526 -r 842917225d56 src/HOL/MicroJava/JVM/JVMDefensive.thy
--- a/src/HOL/MicroJava/JVM/JVMDefensive.thy	Tue Feb 23 15:37:18 2016 +0100
+++ b/src/HOL/MicroJava/JVM/JVMDefensive.thy	Tue Feb 23 16:25:08 2016 +0100
@@ -155,7 +155,7 @@
     apply (erule disjE, simp)
     apply (elim exE conjE)
     apply (erule allE, erule impE, assumption)
-    apply (simp add: exec_all_def exec_d_def split: type_error.splits split_if_asm)
+    apply (simp add: exec_all_def exec_d_def split: type_error.splits if_split_asm)
     apply (rule rtrancl_trans, assumption)
     apply blast
     done
@@ -165,4 +165,4 @@
   show "G \<turnstile> s \<midarrow>jvm\<rightarrow> t" by blast
 qed
 
-end
\ No newline at end of file
+end