diff --git a/dlls/dbghelp/dwarf.c b/dlls/dbghelp/dwarf.c
index 413ae44304..dda1725b00 100644
--- a/dlls/dbghelp/dwarf.c
+++ b/dlls/dbghelp/dwarf.c
@@ -2075,6 +2075,10 @@ static BOOL dwarf2_parse_line_numbers(const dwarf2_section_t* sections,
                         dwarf2_leb128_as_unsigned(&traverse);
                         dwarf2_leb128_as_unsigned(&traverse);
                         break;
+                    case DW_LNE_set_discriminator:
+                        WARN("not handled %s\n", traverse.data);
+                        dwarf2_leb128_as_unsigned(&traverse);
+                        break;
                     default:
                         FIXME("Unsupported extended opcode %x\n", extopcode);
                         break;
diff --git a/dlls/dbghelp/dwarf.h b/dlls/dbghelp/dwarf.h
index 4ecb816c28..9864eccdfc 100644
--- a/dlls/dbghelp/dwarf.h
+++ b/dlls/dbghelp/dwarf.h
@@ -421,6 +421,8 @@ enum dwarf_calling_convention
 #define DW_LNE_end_sequence             0x01
 #define DW_LNE_set_address              0x02
 #define DW_LNE_define_file              0x03
+/* Dwarf4 new values */
+#define DW_LNE_set_discriminator        0x04
 
 #define DW_CIE_ID                       ~(0x0)