diff --git a/src/cmd/llvmplugin/CMakeLists.txt b/src/cmd/llvmplugin/CMakeLists.txt
index c0901aff884ff7..85de2a7b9c7949 100644
--- a/src/cmd/llvmplugin/CMakeLists.txt
+++ b/src/cmd/llvmplugin/CMakeLists.txt
@@ -168,7 +168,7 @@ if(BUILD_TESTING)
   foreach(GOALLC_CALLIND_TARGET IN ITEMS X86 AArch64)
     if(GOALLC_CALLIND_TARGET STREQUAL "X86")
       set(GOALLC_CALLIND_TRIPLE "x86_64-unknown-linux-goobj")
-      set(GOALLC_CALLIND_OFFSET 20)
+      set(GOALLC_CALLIND_OFFSET 17)
       set(GOALLC_DIRECT_CALL_RELOC 7)
     else()
       set(GOALLC_CALLIND_TRIPLE "aarch64-unknown-linux-goobj")
diff --git a/src/cmd/llvmplugin/testdata/alloca-pointer-vector-unsupported.ll b/src/cmd/llvmplugin/testdata/alloca-pointer-vector-unsupported.ll
index 97580c33975290..833ae41d737a34 100644
--- a/src/cmd/llvmplugin/testdata/alloca-pointer-vector-unsupported.ll
+++ b/src/cmd/llvmplugin/testdata/alloca-pointer-vector-unsupported.ll
@@ -4,7 +4,7 @@ declare goabiinternal void @safepoint()
 
 define goabiinternal void @pointer_vector_alloca() "go-stack-growth-statepoint" gc "goallc" {
 entry:
-  %slot = alloca <2 x ptr>, align 16
+  %slot = alloca <1 x ptr>, align 8
   call goabiinternal void @safepoint()
   ret void
 }