diff --git a/flang/docs/Extensions.md b/flang/docs/Extensions.md
--- a/flang/docs/Extensions.md
+++ b/flang/docs/Extensions.md
@@ -261,6 +261,7 @@
   to apply only to a scalar data-ref, but most compilers don't
   enforce it and the constraint is not necessary for a correct
   implementation.
+* A label may follow a semicolon in fixed form source.
 
 ### Extensions supported when enabled by options
 
diff --git a/flang/lib/Parser/prescan.cpp b/flang/lib/Parser/prescan.cpp
--- a/flang/lib/Parser/prescan.cpp
+++ b/flang/lib/Parser/prescan.cpp
@@ -629,6 +629,12 @@
       EmitCharAndAdvance(tokens, nch);
     } else if (ch == '/') {
       slashInCurrentStatement_ = true;
+    } else if (ch == ';' && InFixedFormSource()) {
+      SkipSpaces();
+      if (IsDecimalDigit(*at_)) {
+        Say(GetProvenanceRange(at_, at_ + 1),
+            "Label should be in the label field"_port_en_US);
+      }
     }
   }
   tokens.CloseToken();
diff --git a/flang/test/Parser/bad-label.f b/flang/test/Parser/bad-label.f
new file mode 100644
--- /dev/null
+++ b/flang/test/Parser/bad-label.f
@@ -0,0 +1,4 @@
+! RUN: %flang_fc1 -fsyntax-only -pedantic %s 2>&1 | FileCheck %s
+!CHECK: portability: Label should be in the label field
+      goto 1;  1 continue
+      end