diff --git a/src/Makefile.d/detect.mk b/src/Makefile.d/detect.mk
index 4719d6593..ab6268757 100644
--- a/src/Makefile.d/detect.mk
+++ b/src/Makefile.d/detect.mk
@@ -57,8 +57,8 @@ endif
 # This must have high to low order.
 gcc_versions:=\
 	132 131\
-    123 122 121\
-    114 113 112 111\
+	123 122 121\
+	114 113 112 111\
 	105 104 103 102 101\
 	95 94 93 92 91\
 	85 84 83 82 81\
diff --git a/src/p_map.c b/src/p_map.c
index 80135db74..a9d2cf45d 100644
--- a/src/p_map.c
+++ b/src/p_map.c
@@ -3732,6 +3732,8 @@ void P_SlideMove(mobj_t *mo)
 	vertex_t v1, v2; // fake vertexes
 	line_t junk; // fake linedef
 
+	memset(&junk, 1, sizeof(junk));
+
 	if (tmhitthing && mo->z + mo->height > tmhitthing->z && mo->z < tmhitthing->z + tmhitthing->height)
 	{
 		// Don't mess with your momentum if it's a pushable object. Pushables do their own crazy things already.