diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,14 +28,8 @@
    ${LIBGCRYPT_INCLUDE_DIR}
 )
 
-add_definitions(-DKWALLET5)
 set(library_name "pam_kwallet5")
 
-if ("${KWALLET4}" STREQUAL "1")
-    remove_definitions(-DKWALLET5)
-    set(library_name "pam_kwallet")
-endif()
-
 set(pam_kwallet_SRCS
    pam_kwallet.c
 )
diff --git a/pam_kwallet.c b/pam_kwallet.c
--- a/pam_kwallet.c
+++ b/pam_kwallet.c
@@ -76,11 +76,7 @@
 const static char *logPrefix = NULL;
 static int force_run = 0;
 
-#ifdef KWALLET5
 const static char *envVar = "PAM_KWALLET5_LOGIN";
-#else
-const static char *envVar = "PAM_KWALLET_LOGIN";
-#endif
 
 static int argumentsParsed = -1;
 
@@ -105,7 +101,6 @@
             force_run = 1;
         }
     }
-#ifdef KWALLET5
     if (kdehome == NULL) {
         kdehome = ".local/share";
     }
@@ -118,20 +113,6 @@
     if (logPrefix == NULL) {
         logPrefix = "pam_kwallet5";
     }
-#else
-    if (kdehome == NULL) {
-        kdehome = ".kde";
-    }
-    if (kwalletd == NULL) {
-        kwalletd = "/usr/bin/kwalletd";
-    }
-    if (kwalletPamDataKey == NULL) {
-        kwalletPamDataKey = "kwallet_key";
-    }
-    if (logPrefix == NULL) {
-        logPrefix = "pam_kwallet";
-    }
-#endif
 }
 
 static const char* get_env(pam_handle_t *ph, const char *name)
@@ -452,12 +433,7 @@
     char sockIn[4];
     sprintf(sockIn, "%d", envSocket);
 
-#ifdef KWALLET5
-    char* extraArg = NULL;
-#else
-    char* extraArg = "--nofork";
-#endif
-    char *args[] = {strdup(kwalletd), "--pam-login", pipeInt, sockIn, extraArg, NULL};
+    char *args[] = {strdup(kwalletd), "--pam-login", pipeInt, sockIn, NULL, NULL};
     execve(args[0], args, pam_getenvlist(pamh));
     syslog(LOG_ERR, "%s: could not execute kwalletd from %s", logPrefix, kwalletd);
 
@@ -495,11 +471,7 @@
         pam_syslog(pamh, LOG_ERR, "%s: Couldn't create pipes", logPrefix);
     }
 
-#ifdef KWALLET5
     const char *socketPrefix = "kwallet5";
-#else
-    const char *socketPrefix = "kwallet";
-#endif
 
     char *fullSocket = NULL;
     if (socketPath) {
@@ -814,11 +786,7 @@
         return 1;
     }
 
-#ifdef KWALLET5
     const char *fixpath = "kwalletd/kdewallet.salt";
-#else
-    const char *fixpath = "share/apps/kwallet/kdewallet.salt";
-#endif
     size_t pathSize = strlen(userInfo->pw_dir) + strlen(kdehome) + strlen(fixpath) + 3;//3 == /, / and \0
     char *path = (char*) malloc(pathSize);
     sprintf(path, "%s/%s/%s", userInfo->pw_dir, kdehome, fixpath);
diff --git a/pam_kwallet_init b/pam_kwallet_init
--- a/pam_kwallet_init
+++ b/pam_kwallet_init
@@ -1,9 +1,5 @@
 #!/bin/sh
 
-if test -n "$PAM_KWALLET_LOGIN" ; then
-    env | socat STDIN UNIX-CONNECT:$PAM_KWALLET_LOGIN
-fi
-
 if test -n "$PAM_KWALLET5_LOGIN" ; then
     env | socat STDIN UNIX-CONNECT:$PAM_KWALLET5_LOGIN
 fi