diff --git a/src/script_opt/ZAM/ZBody.cc b/src/script_opt/ZAM/ZBody.cc
index c7fd492bc8..d4804f16d7 100644
--- a/src/script_opt/ZAM/ZBody.cc
+++ b/src/script_opt/ZAM/ZBody.cc
@@ -296,8 +296,8 @@ ValPtr ZBody::DoExec(Frame* f, int start_pc, StmtFlowType& flow)
 		auto& z = insts[pc];
 
 #ifdef DEBUG
-		int profile_pc;
-		double profile_CPU;
+		int profile_pc = 0;
+		double profile_CPU = 0.0;
 
 		if ( do_profile )
 			{