diff --git a/README.md b/README.md
index 9a5fd44a..11ec9e46 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,9 @@ This are just the patch files for this game. I decided to separate them from pat
     - hooks/LuaMessages.cpp
 
 ## Additions
+- Adds new category 'OBSTRUCTSBUILDING' for props to block buildings from being build on top of those
+    - hooks/Reclaimable.cpp
+    - section/Reclaimable.cpp
 - Allows changing army of ACUs
     - hooks/HTransferACUs.cpp
 - Allows customize colors for team color mode
diff --git a/hooks/Reclaimable.cpp b/hooks/Reclaimable.cpp
new file mode 100644
index 00000000..6b2f3f74
--- /dev/null
+++ b/hooks/Reclaimable.cpp
@@ -0,0 +1,5 @@
+#include "../define.h"
+asm(
+    ".section h0; .set h0,0x005F6ED2;"
+    "push "QU(OBSTRUCTSBUILDING)";"
+    );
diff --git a/section/GetTableSize.cpp b/section/GetTableSize.cpp
index 6c753ff2..fdff6628 100644
--- a/section/GetTableSize.cpp
+++ b/section/GetTableSize.cpp
@@ -54,9 +54,9 @@ void IsTableEmpty()
     asm(
         "MOV EAX,[ESI+0xC];"
         "CMP EAX,[ESI+0x8];"
-        "JAE L72;"
+        "JAE L072;"
         "CMP DWORD PTR [EAX],0x5;"
-        "JNE L72;"
+        "JNE L072;"
         "MOV EAX,[EAX+0x4];"
         "MOV CL,[EAX+0x9];"
         "TEST CL,CL;"
@@ -73,7 +73,7 @@ void IsTableEmpty()
         "L22:;"
         "MOV EDX,[EAX+0x20];"
         "TEST EDX,EDX;"
-        "JZ L72;"
+        "JZ L072;"
         "MOV ECX,[EAX+0x10];"
         "ITE_L5:;"
         "CMP DWORD PTR [ECX],0x0;"
@@ -81,7 +81,7 @@ void IsTableEmpty()
         "ADD ECX,0x8;"
         "DEC EDX;"
         "JNZ ITE_L5;"
-        "L72:;"
+        "L072:;"
         "PUSH 0x1;"
         "JMP L12;"
         "L62:;"
diff --git a/section/Reclaimable.cpp b/section/Reclaimable.cpp
new file mode 100644
index 00000000..c0ce53bb
--- /dev/null
+++ b/section/Reclaimable.cpp
@@ -0,0 +1 @@
+char OBSTRUCTSBUILDING[] = "OBSTRUCTSBUILDING";
\ No newline at end of file