diff --git a/test/asm/jr-@.asm b/test/asm/jr-@.asm
index 2bd55f23..c6c70b62 100644
--- a/test/asm/jr-@.asm
+++ b/test/asm/jr-@.asm
@@ -1,7 +1,10 @@
 SECTION "fixed", ROM0[0]
 	jr @
+
 ; We need this section to be floating because RGBASM can know the value of PC
 ; otherwise, leading to different behavior
-; FIXME: we rely on this landing at address 2, which isn't *guaranteed*...
 SECTION "floating", ROM0
 	jr @
+
+; We rely on this landing at address $0002, which isn't *guaranteed*...
+assert STARTOF("floating") == 2
diff --git a/test/asm/pc.asm b/test/asm/pc.asm
index ace6bc90..dbacbca0 100644
--- a/test/asm/pc.asm
+++ b/test/asm/pc.asm
@@ -3,8 +3,10 @@ SECTION "fixed", ROM0[420]
 	ds 69
 	PRINTLN "{@}"
 
-; FIXME: expected to land at $0000
 SECTION "floating", ROM0
 	db @
 	ds 42
 	db @
+
+; We rely on this landing at address $0000, which isn't *guaranteed*...
+assert STARTOF("floating") == 0
diff --git a/test/link/db-@.asm b/test/link/db-@.asm
index b41dfa7c..aaf6daad 100644
--- a/test/link/db-@.asm
+++ b/test/link/db-@.asm
@@ -1,7 +1,10 @@
 SECTION "fixed", ROM0[0]
 	db @, @, @
+
 ; We need this section to be floating because RGBASM can know the value of PC
 ; otherwise, leading to different behavior
-; FIXME: we rely on this landing at address 2, which isn't *guaranteed*...
 SECTION "floating", ROM0
 	db @, @, @
+
+; We rely on this landing at address $0003, which isn't *guaranteed*...
+assert STARTOF("floating") == 3
diff --git a/test/link/patch-diagnostics.asm b/test/link/patch-diagnostics.asm
index e03b3fea..b11676b9 100644
--- a/test/link/patch-diagnostics.asm
+++ b/test/link/patch-diagnostics.asm
@@ -8,3 +8,6 @@ ld a, 1 >> (fzero - 1)
 ld a, 1 >> (fzero + 32)
 ld a, 1 >>> (fzero - 1)
 ld a, 1 >>> (fzero + 32)
+
+; We rely on this landing at address $0000, which isn't *guaranteed*...
+assert startof("test") == 0