diff --git a/meson.build b/meson.build
index cacbbcf115..a2ce73b5e5 100644
--- a/meson.build
+++ b/meson.build
@@ -414,7 +414,7 @@ endif
 
 if posix
     path_source = files('osdep/path-unix.c')
-    if cc.has_function('fork', prefix : '#include <unistd.h>')
+    if not get_option('fuzzers') and cc.has_function('fork', prefix : '#include <unistd.h>')
         sources += files('osdep/subprocess-posix.c')
     else
         sources += files('osdep/subprocess-dummy.c')
@@ -516,9 +516,13 @@ if features['win32-desktop']
                           cc.find_library('version')]
     dependencies += win32_desktop_libs
     path_source = files('osdep/path-win.c')
+    if not get_option('fuzzers')
+        sources += files('osdep/subprocess-win.c')
+    else
+        sources += files('osdep/subprocess-dummy.c')
+    endif
     sources += files('input/ipc-win.c',
                      'osdep/language-win.c',
-                     'osdep/subprocess-win.c',
                      'osdep/terminal-win.c',
                      'video/out/w32_common.c',
                      'video/out/win32/displayconfig.c',