diff --git a/gui/osx_env.c b/gui/osx_env.c
index 61cc2507e..0cd7e1bf1 100644
--- a/gui/osx_env.c
+++ b/gui/osx_env.c
@@ -73,20 +73,20 @@ void osx_setup_paths (void)
     /* R shared library: may require platform-specific symlink */
     rhome = getenv("R_HOME");
     if (rhome == NULL) {
-	setenv("R_HOME", "/Library/Frameworks/R.framework/Resources", 1);
+        setenv("R_HOME", "/Library/Frameworks/R.framework/Resources", 1);
     }
 
     /* Add ourselves to PATH? */
     if (1) {
-	char *path0 = getenv("PATH");
+        char *path0 = getenv("PATH");
 
-	if (path0 != NULL && *path0 != '\0') {
-	    tmp = g_strdup_printf("%s:%s/bin", path0, respath);
-	} else {
-	    tmp = g_strdup_printf("%s/bin", respath);
-	}
-	setenv("PATH", tmp, 1);
-	g_free(tmp);
+        if (path0 != NULL && *path0 != '\0') {
+            tmp = g_strdup_printf("%s:%s/bin", path0, respath);
+        } else {
+            tmp = g_strdup_printf("%s/bin", respath);
+        }
+        setenv("PATH", tmp, 1);
+        g_free(tmp);
     }
 
     g_free(respath);