diff --git a/src/ircode.c b/src/ircode.c
index 196f9f7b413ad..2e16d1b5b2420 100644
--- a/src/ircode.c
+++ b/src/ircode.c
@@ -1234,7 +1234,6 @@ JL_DLLEXPORT jl_string_t *jl_compress_codelocs(int32_t firstline, jl_value_t *co
 #undef SETMIN
 #undef SETMAX
     }
-    min.line = min.to = min.pc = firstline <= 0 ? INT32_MAX : firstline;
     int32_t header[3];
     header[0] = min.line > max.line ? 0 : min.line;
     header[1] = min.line > max.line ? 0 : max.line - min.line;
diff --git a/test/compiler/ssair.jl b/test/compiler/ssair.jl
index 9d5f7b617080d..9ff4d3d8a4220 100644
--- a/test/compiler/ssair.jl
+++ b/test/compiler/ssair.jl
@@ -825,3 +825,10 @@ end
 @test_throws ErrorException f_must_throw_phinode_edge()
 global global_error_switch = false
 @test f_must_throw_phinode_edge() == 1
+
+# Test roundtrip of debuginfo compression
+let cl = Int32[32, 1, 1, 1000, 240, 230]
+    str = ccall(:jl_compress_codelocs, Any, (Int32, Any, Int), 378, cl, 2)::String;
+    cl2 = ccall(:jl_uncompress_codelocs, Any, (Any, Int), str, 2)
+    @test cl == cl2
+end