diff --git a/src/Makefile.am b/src/Makefile.am
index 34e4435..fc1db79 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -7,6 +7,6 @@ pkglib_LTLIBRARIES = libzzuf.la
 libzzuf_la_SOURCES = libzzuf.c libzzuf.h fuzz.c fuzz.h debug.c debug.h \
                      load-fd.c load-signal.c load-stream.c load.h \
                      random.c random.h
-libzzuf_la_LDFLAGS = -module -avoid-version -no-undefined
+libzzuf_la_LDFLAGS = -avoid-version -no-undefined
 libzzuf_la_LIBADD = -ldl
 
diff --git a/src/zzuf.c b/src/zzuf.c
index 3983740..8478369 100644
--- a/src/zzuf.c
+++ b/src/zzuf.c
@@ -488,20 +488,22 @@ static void set_environment(char const *progpath)
     char *libpath, *tmp;
     int len = strlen(progpath);
 #ifdef __APPLE__
-    char const *preload = "DYLD_INSERT_LIBRARIES";
+#   define FILENAME "libzzuf.dylib"
+#   define PRELOAD "DYLD_INSERT_LIBRARIES"
     setenv("DYLD_FORCE_FLAT_NAMESPACE", "1", 1);
 #else
-    char const *preload = "LD_PRELOAD";
+#   define FILENAME "libzzuf.so"
+#   define PRELOAD "LD_PRELOAD"
 #endif
 
-    libpath = malloc(len + strlen("/.libs/libzzuf.so") + 1);
+    libpath = malloc(len + strlen("/.libs/" FILENAME) + 1);
     strcpy(libpath, progpath);
     tmp = strrchr(libpath, '/');
-    strcpy(tmp ? tmp + 1 : libpath, ".libs/libzzuf.so");
+    strcpy(tmp ? tmp + 1 : libpath, ".libs/" FILENAME);
     if(access(libpath, R_OK) == 0)
-        setenv(preload, libpath, 1);
+        setenv(PRELOAD, libpath, 1);
     else
-        setenv(preload, LIBDIR "/libzzuf.so", 1);
+        setenv(PRELOAD, LIBDIR "/" FILENAME, 1);
     free(libpath);
 }