diff --git a/SilentPatch/Patterns.cpp b/SilentPatch/Patterns.cpp
index f4aebce..431667c 100644
--- a/SilentPatch/Patterns.cpp
+++ b/SilentPatch/Patterns.cpp
@@ -223,7 +223,7 @@ void pattern::EnsureMatches(uint32_t maxCount)
 			}
 			i++;
 		}
-		else i += std::max(1, j - Last[ ptr[j] ]);
+		else i += std::max(ptrdiff_t(1), j - Last[ ptr[j] ]);
 	}
 
 	m_matched = true;
diff --git a/SilentPatch/Patterns.h b/SilentPatch/Patterns.h
index 4085b3e..e146b9b 100644
--- a/SilentPatch/Patterns.h
+++ b/SilentPatch/Patterns.h
@@ -117,7 +117,7 @@ namespace hook
 		pattern(const char (&pattern)[Len])
 			: pattern(getRVA<void>(0))
 		{
-			Initialize(pattern, Len);
+			Initialize(pattern, Len-1);
 		}
 
 		inline pattern& count(uint32_t expected) &
@@ -203,7 +203,7 @@ namespace hook
 		module_pattern(void* module, const char(&pattern)[Len])
 			: pattern(module)
 		{
-			Initialize(pattern, Len);
+			Initialize(pattern, Len-1);
 		}
 	};
 
@@ -215,7 +215,7 @@ namespace hook
 		range_pattern(uintptr_t begin, uintptr_t end, const char(&pattern)[Len])
 			: pattern(begin, end)
 		{
-			Initialize(pattern, Len);
+			Initialize(pattern, Len-1);
 		}
 	};