diff --git a/fail_db.txt b/fail_db.txt
index b147a08b..8ad7a822 100644
--- a/fail_db.txt
+++ b/fail_db.txt
@@ -491,18 +491,6 @@
 ./tests/store-int8.ispc runfail     x86-64     sse4-i16x8   Linux LLVM 3.6 clang++3.4 -O0 *
 ./tests/store-int8.ispc runfail     x86     sse4-i32x8   Linux LLVM 3.6 clang++3.4 -O0 *
 ./tests/store-int8.ispc runfail     x86-64     sse4-i32x8   Linux LLVM 3.6 clang++3.4 -O0 *
-./tests/pmuls_vi8.ispc runfail     x86     sse4-i16x8   Linux LLVM 3.6 g++4.9 -O2 *
-./tests/pmuls_vi8.ispc runfail     x86-64     sse4-i16x8   Linux LLVM 3.6 g++4.9 -O2 *
-./tests/pmuls_vi8.ispc runfail     x86     sse4-i32x8   Linux LLVM 3.6 g++4.9 -O2 *
-./tests/pmuls_vi8.ispc runfail     x86-64     sse4-i32x8   Linux LLVM 3.6 g++4.9 -O2 *
-./tests/scatter-int8-1.ispc runfail     x86     sse4-i16x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/scatter-int8-1.ispc runfail     x86-64     sse4-i16x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/scatter-int8-1.ispc runfail     x86     sse4-i32x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/scatter-int8-1.ispc runfail     x86-64     sse4-i32x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/store-int8.ispc runfail     x86     sse4-i16x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/store-int8.ispc runfail     x86-64     sse4-i16x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/store-int8.ispc runfail     x86     sse4-i32x8   Linux LLVM 3.6 g++4.9 -O0 *
-./tests/store-int8.ispc runfail     x86-64     sse4-i32x8   Linux LLVM 3.6 g++4.9 -O0 *
 ./tests/atomics-6.ispc compfail  x86-64      generic-4   Linux LLVM 3.6 clang++3.4 -O2 *
 ./tests/atomics-uniform-8.ispc compfail  x86-64      generic-4   Linux LLVM 3.6 clang++3.4 -O2 *
 ./tests/atomics-uniform-9.ispc compfail  x86-64      generic-4   Linux LLVM 3.6 clang++3.4 -O2 *
@@ -529,3 +517,5 @@
 ./tests/atomics-6.ispc compfail  x86-64     generic-16   Linux LLVM 3.6 clang++3.4 -O0 *
 ./tests/atomics-uniform-8.ispc compfail  x86-64     generic-16   Linux LLVM 3.6 clang++3.4 -O0 *
 ./tests/atomics-uniform-9.ispc compfail  x86-64     generic-16   Linux LLVM 3.6 clang++3.4 -O0 *
+./tests/psubus_vi16.ispc compfail  x86-64            knc   Linux LLVM 3.6   icpc13.1 -O2 *
+./tests/psubus_vi8.ispc compfail  x86-64            knc   Linux LLVM 3.6   icpc13.1 -O2 *