diff --git a/llvm/test/tools/yaml2obj/empty-or-invalid-doc.yaml b/llvm/test/tools/yaml2obj/empty-or-invalid-doc.yaml
index de79f4162e3f..9f451cab5a5a 100644
--- a/llvm/test/tools/yaml2obj/empty-or-invalid-doc.yaml
+++ b/llvm/test/tools/yaml2obj/empty-or-invalid-doc.yaml
@@ -2,7 +2,7 @@
 # RUN: echo -n "" | not yaml2obj 2>&1 | FileCheck %s
 # RUN: echo " " | not yaml2obj 2>&1 | FileCheck %s
 # RUN: echo "  " | not yaml2obj 2>&1 | FileCheck %s
-# CHECK: yaml2obj: error: Unknown document type!
+# CHECK: error: Unknown document type!
 
 # RUN: echo -e -n "\xff" | not yaml2obj 2>&1 | FileCheck %s --check-prefix=INVALID
-# INVALID: yaml2obj: error: Failed to parse YAML input!
+# INVALID: error: Failed to parse YAML input!
diff --git a/llvm/test/tools/yaml2obj/invalid-docnum.test b/llvm/test/tools/yaml2obj/invalid-docnum.test
index 0f796024c62d..0a533468eda5 100644
--- a/llvm/test/tools/yaml2obj/invalid-docnum.test
+++ b/llvm/test/tools/yaml2obj/invalid-docnum.test
@@ -2,10 +2,10 @@
 ## greater than the number of YAML inputs in the file.
 
 # RUN: not yaml2obj %s --docnum=3 2>&1 | FileCheck %s
-# CHECK: yaml2obj: error: Cannot find the 3rd document
+# CHECK: error: Cannot find the 3rd document
 
 # RUN: not yaml2obj %s --docnum=76768677 2>&1 | FileCheck %s --check-prefix=TWO
-# TWO: yaml2obj: error: Cannot find the 76768677th document
+# TWO: error: Cannot find the 76768677th document
 
 --- !ELF
 FileHeader:
diff --git a/llvm/test/tools/yaml2obj/missing_document_tag.yaml b/llvm/test/tools/yaml2obj/missing_document_tag.yaml
index d41e7991bb89..09cdc4bff656 100644
--- a/llvm/test/tools/yaml2obj/missing_document_tag.yaml
+++ b/llvm/test/tools/yaml2obj/missing_document_tag.yaml
@@ -6,4 +6,4 @@ DummyData:
 ...
 
 # CHECK: YAML:4:1: error: YAML Object File missing document type tag!
-# CHECK: yaml2obj: error: Failed to parse YAML input!
+# CHECK: error: Failed to parse YAML input!
diff --git a/llvm/test/tools/yaml2obj/multi-doc.test b/llvm/test/tools/yaml2obj/multi-doc.test
index 9d3762b0291b..0b794e100676 100644
--- a/llvm/test/tools/yaml2obj/multi-doc.test
+++ b/llvm/test/tools/yaml2obj/multi-doc.test
@@ -16,7 +16,7 @@
 # DOC2: Name: _sym2
 # DOC3: Name: _sym3
 # DOC4: Name: _sym4
-# DOC5: yaml2obj: error: Cannot find the 5th document
+# DOC5: error: Cannot find the 5th document
 
 --- !ELF
 FileHeader: !FileHeader
diff --git a/llvm/test/tools/yaml2obj/section-size-content.yaml b/llvm/test/tools/yaml2obj/section-size-content.yaml
index b57526abe715..5b231a8362ab 100644
--- a/llvm/test/tools/yaml2obj/section-size-content.yaml
+++ b/llvm/test/tools/yaml2obj/section-size-content.yaml
@@ -175,4 +175,4 @@ Sections:
 # ERR2:      error: Section size must be greater than or equal to the content size
 # ERR2-NEXT: - Name: .data
 # ERR2-NEXT:   ^
-# ERR2-NEXT: yaml2obj: error: Failed to parse YAML input!
+# ERR2-NEXT: error: Failed to parse YAML input!