diff --git a/src/build-scripts/hidesymbols.map b/src/build-scripts/hidesymbols.map
index 3f40d53b6..d9be16499 100644
--- a/src/build-scripts/hidesymbols.map
+++ b/src/build-scripts/hidesymbols.map
@@ -1,4 +1,4 @@
 {
-    global: *OSL*; test_shade; *osl*imageio*; *osl_input_extensions; PyInit*;
+    global: *OSL*; *osl*imageio*; *osl_input_extensions; PyInit*;
     local: osl_*; *pvt*; *;
 };
diff --git a/src/testshade/CMakeLists.txt b/src/testshade/CMakeLists.txt
index 470c1fc78..12e1745a1 100644
--- a/src/testshade/CMakeLists.txt
+++ b/src/testshade/CMakeLists.txt
@@ -110,6 +110,13 @@ if (NOT CODECOV)
                            OUTPUT_NAME libtestshade${OSL_LIBNAME_SUFFIX}
                            )
 
+    # Only libtestshade exports test_shade; keep it out of the global map.
+    if (VISIBILITY_MAP_COMMAND)
+        set_property (TARGET libtestshade
+                      APPEND PROPERTY LINK_FLAGS
+                      -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/testshade_symbols.map)
+    endif ()
+
     target_link_libraries (libtestshade
                            PRIVATE
                                oslexec oslquery oslcomp)
diff --git a/src/testshade/testshade_symbols.map b/src/testshade/testshade_symbols.map
new file mode 100644
index 000000000..65589759a
--- /dev/null
+++ b/src/testshade/testshade_symbols.map
@@ -0,0 +1,4 @@
+{
+    global: test_shade;
+    local: *;
+};