diff --git a/lld/MachO/InputFiles.cpp b/lld/MachO/InputFiles.cpp
--- a/lld/MachO/InputFiles.cpp
+++ b/lld/MachO/InputFiles.cpp
@@ -343,23 +343,20 @@
     };
 
     if (sectionType(sec.flags) == S_CSTRING_LITERALS) {
-      if (sec.nreloc && config->dedupStrings)
-        fatal(toString(this) + " contains relocations in " + sec.segname + "," +
-              sec.sectname +
-              ", so LLD cannot deduplicate strings. Try re-running with "
-              "--no-deduplicate-strings.");
-
-      InputSection *isec = make<CStringInputSection>(
-          section, data, align,
-          /*dedupLiterals=*/name == section_names::objcMethname ||
-              config->dedupStrings);
+      if (sec.nreloc)
+        fatal(toString(this) + ": " + sec.segname + "," + sec.sectname +
+              " contains relocations, which is unsupported");
+      bool dedupLiterals =
+          name == section_names::objcMethname || config->dedupStrings;
+      InputSection *isec =
+          make<CStringInputSection>(section, data, align, dedupLiterals);
       // FIXME: parallelize this?
       cast<CStringInputSection>(isec)->splitIntoPieces();
       section.subsections.push_back({0, isec});
     } else if (isWordLiteralSection(sec.flags)) {
       if (sec.nreloc)
-        fatal(toString(this) + " contains unsupported relocations in " +
-              sec.segname + "," + sec.sectname);
+        fatal(toString(this) + ": " + sec.segname + "," + sec.sectname +
+              " contains relocations, which is unsupported");
       InputSection *isec = make<WordLiteralInputSection>(section, data, align);
       section.subsections.push_back({0, isec});
     } else if (auto recordSize = getRecordSize(segname, name)) {
diff --git a/lld/test/MachO/invalid/cstring-dedup.s b/lld/test/MachO/invalid/cstring-dedup.s
--- a/lld/test/MachO/invalid/cstring-dedup.s
+++ b/lld/test/MachO/invalid/cstring-dedup.s
@@ -11,7 +11,7 @@
 # RUN: not %lld -dylib %t/relocs.o 2>&1 | FileCheck %s --check-prefix=RELOCS
 
 # TERM:   not-terminated.o:(__cstring+0x4): string is not null terminated
-# RELOCS: relocs.o contains relocations in __TEXT,__cstring, so LLD cannot deduplicate strings. Try re-running with --no-deduplicate-strings.
+# RELOCS: error: {{.*}}relocs.o: __TEXT,__cstring contains relocations, which is unsupported
 
 #--- not-terminated.s
 .cstring