diff --git a/clang/include/clang/Basic/DiagnosticDriverKinds.td b/clang/include/clang/Basic/DiagnosticDriverKinds.td
--- a/clang/include/clang/Basic/DiagnosticDriverKinds.td
+++ b/clang/include/clang/Basic/DiagnosticDriverKinds.td
@@ -214,7 +214,7 @@
 
 def err_drv_invalid_value : Error<"invalid value '%1' in '%0'">;
 def err_drv_invalid_int_value : Error<"invalid integral value '%1' in '%0'">;
-def err_drv_invalid_value_with_suggestion : Error<"invalid value '%1' in '%0','%2'">;
+def err_drv_invalid_value_with_suggestion : Error<"invalid value '%1' in '%0', %2">;
 def err_drv_invalid_remap_file : Error<
     "invalid option '%0' not of the form <from-file>;<to-file>">;
 def err_drv_invalid_gcc_output_type : Error<
diff --git a/clang/test/Driver/stack-protector-guard.c b/clang/test/Driver/stack-protector-guard.c
--- a/clang/test/Driver/stack-protector-guard.c
+++ b/clang/test/Driver/stack-protector-guard.c
@@ -7,7 +7,7 @@
 
 // CHECK-TLS: "-cc1" {{.*}}"-mstack-protector-guard=tls"
 // CHECK-GLOBAL: "-cc1" {{.*}}"-mstack-protector-guard=global"
-// INVALID-VALUE: error: invalid value 'local' in 'mstack-protector-guard=','valid arguments to '-mstack-protector-guard=' are:tls global'
+// INVALID-VALUE: error: invalid value 'local' in 'mstack-protector-guard=', valid arguments to '-mstack-protector-guard=' are:tls global
 
 // RUN: %clang -### -target x86_64-unknown-unknown -mstack-protector-guard-reg=fs %s 2>&1 | \
 // RUN:   FileCheck -check-prefix=CHECK-FS %s
@@ -35,7 +35,7 @@
 
 // CHECK-FS: "-cc1" {{.*}}"-mstack-protector-guard-reg=fs"
 // CHECK-GS: "-cc1" {{.*}}"-mstack-protector-guard-reg=gs"
-// INVALID-REG: error: invalid value {{.*}} in 'mstack-protector-guard-reg=','for X86, valid arguments to '-mstack-protector-guard-reg=' are:fs gs'
+// INVALID-REG: error: invalid value {{.*}} in 'mstack-protector-guard-reg=', for X86, valid arguments to '-mstack-protector-guard-reg=' are:fs gs
 
 // RUN: %clang -### -target x86_64-unknown-unknown -mstack-protector-guard-offset=30 %s 2>&1 | \
 // RUN:   FileCheck -check-prefix=CHECK-OFFSET %s
diff --git a/flang/test/Driver/fixed-line-length.f90 b/flang/test/Driver/fixed-line-length.f90
--- a/flang/test/Driver/fixed-line-length.f90
+++ b/flang/test/Driver/fixed-line-length.f90
@@ -37,12 +37,12 @@
 !-----------------------------------------
 ! EXPECTED OUTPUT WITH A NEGATIVE LENGTH
 !-----------------------------------------
-! NEGATIVELENGTH: invalid value '-2' in 'ffixed-line-length=','value must be 'none' or a non-negative integer'
+! NEGATIVELENGTH: invalid value '-2' in 'ffixed-line-length=', value must be 'none' or a non-negative integer
 
 !-----------------------------------------
 ! EXPECTED OUTPUT WITH LENGTH LESS THAN 7
 !-----------------------------------------
-! INVALIDLENGTH: invalid value '3' in 'ffixed-line-length=','value must be at least seven'
+! INVALIDLENGTH: invalid value '3' in 'ffixed-line-length=', value must be at least seven
 
 !---------------------------------------
 ! EXPECTED OUTPUT WITH UNLIMITED LENGTH