diff --git a/include/asm/rpn.hpp b/include/asm/rpn.hpp
index 5a803f08..435efa11 100644
--- a/include/asm/rpn.hpp
+++ b/include/asm/rpn.hpp
@@ -50,8 +50,6 @@ void rpn_StartOfSection(Expression &expr, char const *sectionName);
 void rpn_SizeOfSectionType(Expression &expr, SectionType type);
 void rpn_StartOfSectionType(Expression &expr, SectionType type);
 
-void rpn_Free(Expression &expr);
-
 void rpn_CheckHRAM(Expression &expr);
 void rpn_CheckRST(Expression &expr);
 void rpn_CheckNBit(const Expression &expr, uint8_t n);
diff --git a/src/asm/parser.y b/src/asm/parser.y
index e81d1ab1..8aa87a9f 100644
--- a/src/asm/parser.y
+++ b/src/asm/parser.y
@@ -796,7 +796,6 @@ assert:
 		} else if ($3.val == 0) {
 			failAssert($2);
 		}
-		rpn_Free($3);
 	}
 	| POP_ASSERT assert_type relocexpr COMMA string {
 		if (!$3.isKnown) {
@@ -804,7 +803,6 @@ assert:
 		} else if ($3.val == 0) {
 			failAssertMsg($2, $5.string);
 		}
-		rpn_Free($3);
 	}
 	| POP_STATIC_ASSERT assert_type const {
 		if ($3 == 0)
@@ -1981,7 +1979,6 @@ z80_ld_mem:
 			}
 			sect_AbsByte(0xE0);
 			sect_AbsByte($2.val & 0xFF);
-			rpn_Free($2);
 		} else {
 			sect_AbsByte(0xEA);
 			sect_RelWord($2, 1);
@@ -2039,14 +2036,12 @@ z80_ld_a:
 				}
 				sect_AbsByte(0xF0);
 				sect_AbsByte($4.val & 0xFF);
-				rpn_Free($4);
 			} else {
 				sect_AbsByte(0xFA);
 				sect_RelWord($4, 1);
 			}
 		} else {
 			::error("Destination operand must be A\n");
-			rpn_Free($4);
 		}
 	}
 ;
@@ -2173,7 +2168,6 @@ z80_rst:
 			sect_RelByte($2, 0);
 		else
 			sect_AbsByte(0xC7 | $2.val);
-		rpn_Free($2);
 	}
 ;
 
diff --git a/src/asm/rpn.cpp b/src/asm/rpn.cpp
index 9011cc9d..2f884929 100644
--- a/src/asm/rpn.cpp
+++ b/src/asm/rpn.cpp
@@ -44,11 +44,6 @@ static uint8_t *reserveSpace(Expression &expr, uint32_t size) {
 	return &expr.rpn[curSize];
 }
 
-// Free the RPN expression
-void rpn_Free(Expression &expr) {
-	initExpression(expr);
-}
-
 // Add symbols, constants and operators to expression
 void rpn_Number(Expression &expr, uint32_t val) {
 	initExpression(expr);
diff --git a/src/asm/section.cpp b/src/asm/section.cpp
index 6526bf91..e8135d2d 100644
--- a/src/asm/section.cpp
+++ b/src/asm/section.cpp
@@ -729,7 +729,6 @@ void sect_RelByte(Expression &expr, uint32_t pcShift) {
 	} else {
 		writebyte(expr.val);
 	}
-	rpn_Free(expr);
 }
 
 // Output several copies of a relocatable byte. Checking will be done to see if
@@ -750,9 +749,6 @@ void sect_RelBytes(uint32_t n, std::vector<Expression> &exprs) {
 			writebyte(expr.val);
 		}
 	}
-
-	for (Expression &expr : exprs)
-		rpn_Free(expr);
 }
 
 // Output a relocatable word. Checking will be done to see if
@@ -769,7 +765,6 @@ void sect_RelWord(Expression &expr, uint32_t pcShift) {
 	} else {
 		writeword(expr.val);
 	}
-	rpn_Free(expr);
 }
 
 // Output a relocatable longword. Checking will be done to see if
@@ -786,7 +781,6 @@ void sect_RelLong(Expression &expr, uint32_t pcShift) {
 	} else {
 		writelong(expr.val);
 	}
-	rpn_Free(expr);
 }
 
 // Output a PC-relative relocatable byte. Checking will be done to see if it
@@ -819,7 +813,6 @@ void sect_PCRelByte(Expression &expr, uint32_t pcShift) {
 			writebyte(offset);
 		}
 	}
-	rpn_Free(expr);
 }
 
 // Output a binary file