diff --git a/sw/CppunitTest_sw_core_layout.mk b/sw/CppunitTest_sw_core_layout.mk
index 2cae001add53..80dc1530fdb3 100644
--- a/sw/CppunitTest_sw_core_layout.mk
+++ b/sw/CppunitTest_sw_core_layout.mk
@@ -71,6 +71,11 @@ $(eval $(call gb_CppunitTest_use_uiconfigs,sw_core_layout, \
     svx \
 ))
 
+# assert if font/glyph fallback occurs
+$(call gb_CppunitTest_get_target,sw_core_layout): \
+    EXTRA_ENV_VARS := \
+        SAL_ABORT_ON_NON_APPLICATION_FONT_USE=1
+
 $(eval $(call gb_CppunitTest_use_more_fonts,sw_core_layout))
 
 # vim: set noet sw=4 ts=4:
diff --git a/sw/layoutwriter_setup.mk b/sw/layoutwriter_setup.mk
index bf05b937764e..9d10fa9ac2c6 100644
--- a/sw/layoutwriter_setup.mk
+++ b/sw/layoutwriter_setup.mk
@@ -82,7 +82,7 @@ $(eval $(call gb_CppunitTest_use_uiconfigs,sw_layoutwriter$(1), \
 $(call gb_CppunitTest_get_target,sw_layoutwriter$(1)): \
     $(call gb_Library_get_target,textconv_dict)
 
-# reset the LD_LIBRARY_PATH for spawned GPG processes
+# assert if font/glyph fallback occurs
 $(call gb_CppunitTest_get_target,sw_layoutwriter$(1)): \
     EXTRA_ENV_VARS := \
         SAL_ABORT_ON_NON_APPLICATION_FONT_USE=1
diff --git a/vcl/unx/generic/fontmanager/fontconfig.cxx b/vcl/unx/generic/fontmanager/fontconfig.cxx
index c8852639c7b5..7557c2a6abcb 100644
--- a/vcl/unx/generic/fontmanager/fontconfig.cxx
+++ b/vcl/unx/generic/fontmanager/fontconfig.cxx
@@ -1175,8 +1175,6 @@ void PrintFontManager::Substitute(vcl::font::FontSelectPattern &rPattern, OUStri
     static bool bAbortOnFontSubstitute = getenv("SAL_ABORT_ON_NON_APPLICATION_FONT_USE") != nullptr;
     if (bAbortOnFontSubstitute && rPattern.maTargetName != rPattern.maSearchName)
     {
-        SAL_INFO("vcl.fonts", "PrintFontManager::Substitute: missing font: '" << rPattern.maTargetName <<
-                              "' try: " << rPattern.maSearchName << " instead");
         if (bMissingJustBullet)
         {
             assert(rPattern.maTargetName == "Amiri Quran" || rPattern.maTargetName == "David CLM" ||
@@ -1187,6 +1185,8 @@ void PrintFontManager::Substitute(vcl::font::FontSelectPattern &rPattern, OUStri
             // ImplFontMetricData::ImplInitTextLineSize
             return;
         }
+        SAL_WARN("vcl.fonts", "PrintFontManager::Substitute: missing font: '" << rPattern.maTargetName <<
+                              "' try: " << rPattern.maSearchName << " instead");
         std::abort();
     }
 }