diff --git a/Compat.c b/Compat.c
index 4cf27399..43d02ec7 100644
--- a/Compat.c
+++ b/Compat.c
@@ -94,11 +94,11 @@ int Compat_openat(const char* dirpath,
 
 #endif /* !HAVE_OPENAT */
 
-int Compat_readlinkat(int dirfd,
-                      const char* dirpath,
-                      const char* pathname,
-                      char* buf,
-                      size_t bufsize) {
+ssize_t Compat_readlinkat(int dirfd,
+                          const char* dirpath,
+                          const char* pathname,
+                          char* buf,
+                          size_t bufsize) {
 
 #ifdef HAVE_READLINKAT
 
diff --git a/Compat.h b/Compat.h
index fff437be..3b567736 100644
--- a/Compat.h
+++ b/Compat.h
@@ -50,10 +50,10 @@ int Compat_openat(openat_arg_t dirpath, const char* pathname, int flags);
 
 #endif /* HAVE_OPENAT */
 
-int Compat_readlinkat(int dirfd,
-                   const char* dirpath,
-                   const char* pathname,
-                   char* buf,
-                   size_t bufsize);
+ssize_t Compat_readlinkat(int dirfd,
+                          const char* dirpath,
+                          const char* pathname,
+                          char* buf,
+                          size_t bufsize);
 
 #endif /* HEADER_Compat */
diff --git a/linux/Platform.c b/linux/Platform.c
index 833044b1..dc917459 100644
--- a/linux/Platform.c
+++ b/linux/Platform.c
@@ -371,7 +371,7 @@ char* Platform_getInodeFilename(pid_t pid, ino_t inode) {
    struct stat sb;
    struct dirent *de;
    DIR *dirp;
-   size_t len;
+   ssize_t len;
    int fd;
 
    char path[PATH_MAX];